build(deps): update utxorpc-spec requirement from 0.3.0 to 0.4.4
Updates the requirements on [utxorpc-spec](https://github.com/utxorpc/spec) to permit the latest version. - [Commits](https://github.com/utxorpc/spec/compare/v0.3.0...v0.4.4) --- updated-dependencies: - dependency-name: utxorpc-spec dependency-type: direct:production ... Signed-off-by: dependabot[bot] <[email protected]>