Cardano Updates

Drop a significant part of the usage of `W.Coin`, `W.TxOut`, `W.UTxO` in
`BalanceSpec`, as part
of the effort to eventually consistently only use ledger types.

Depends on #4762

### Changes

- Remove all bump.sh use and management
- Use `openapi-changes` to compute and report the API difference with
the latest release in the release pipeline
- Use `swager-cli` to validate the swagger schema in the main pipeline

### Issues 

fix #4901

### Notes

This is a release dry run that uses the new tool:
https://buildkite.com/cardano-foundation/cardano-wallet-release/builds/689
The test release contains a not-perfect API diff that I hat to fix by
hand given the particularly complex text in the change. It was not
rendered super nicely.

#### -------------------- Original from the pipeline
---------------------------

## API changes

### New Endpoints: None
-----------------------

### Deleted Endpoints: None
---------------------------

### Modified Endpoints: 1
-------------------------
GET /wallets/{walletId}/keys
- Description changed from '<p align="right">status:
<strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.
' to '<p align="right">status: <strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.

Note the returned key is bech32-encoded. To be used when restoring
a wallet with public account key only, one needs to pass the key
in hex-encoded form. The <a href="">bech32</a> tool which is included
in cardano-wallet distribution can used on the command-line:

<code>
curl https://my.host/v2/wallets/1f8[...]/keys?format=extended' | jq -r .
| bech32
</code>
'

#### ------------------ After small cleanup on quotes
-------------------------

## API changes

### New Endpoints: None
-----------------------

### Deleted Endpoints: None
---------------------------

### Modified Endpoints: 1
-------------------------
GET /wallets/{walletId}/keys
- Description changed from 
```<p align="right">status: <strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.
``` 
to 

```<p align="right">status: <strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.

Note the returned key is bech32-encoded. To be used when restoring
a wallet with public account key only, one needs to pass the key
in hex-encoded form. The <a href="">bech32</a> tool which is included
in cardano-wallet distribution can used on the command-line:

<code>
curl https://my.host/v2/wallets/1f8[...]/keys?format=extended' | jq -r . | bech32
</code>
```

### Changes

- Remove all bump.sh use and management
- Use `openapi-changes` to compute and report the API difference with
the latest release in the release pipeline
- Use `swager-cli` to validate the swagger schema in the main pipeline

### Issues

fix #4901

### Notes

This is a release dry run that uses the new tool:
https://buildkite.com/cardano-foundation/cardano-wallet-release/builds/689
The test release contains a not-perfect API diff that I hat to fix by
hand given the particularly complex text in the change. It was not
rendered super nicely.

#### -------------------- Original from the pipeline
---------------------------

## API changes

### New Endpoints: None
-----------------------

### Deleted Endpoints: None
---------------------------

### Modified Endpoints: 1
-------------------------
GET /wallets/{walletId}/keys
- Description changed from '<p align="right">status:
<strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.
' to '<p align="right">status: <strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.

Note the returned key is bech32-encoded. To be used when restoring
a wallet with public account key only, one needs to pass the key
in hex-encoded form. The <a href="">bech32</a> tool which is included
in cardano-wallet distribution can used on the command-line:

<code>
curl https://my.host/v2/wallets/1f8[...]/keys?format=extended' | jq -r .
| bech32
</code>
'

#### ------------------ After small cleanup on quotes
-------------------------

## API changes

### New Endpoints: None
-----------------------

### Deleted Endpoints: None
---------------------------

### Modified Endpoints: 1
-------------------------
GET /wallets/{walletId}/keys
- Description changed from
```<p align="right">status: <strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.
```
to

```<p align="right">status: <strong>stable</strong></p>
Retrieve the account public key of this wallet.

To get an extended public key, instead of the public key,
use query parameter `format=extended`. For non-extended public key
use `format=non_extended` or omit query parameter.

Note the returned key is bech32-encoded. To be used when restoring
a wallet with public account key only, one needs to pass the key
in hex-encoded form. The <a href="">bech32</a> tool which is included
in cardano-wallet distribution can used on the command-line:

<code>
curl https://my.host/v2/wallets/1f8[...]/keys?format=extended' | jq -r . | bech32
</code>
```