chore(deps): bump express-openapi-validator to ^5.6.2 (pulls multer 2.x)
Bumps express-openapi-validator in cardano-services from ^4.13.8 to ^5.6.2, which depends on multer ^2.0.2 — clearing the multer high-severity advisory (< 2.x). The validation middleware options we pass (apiSpec, ignoreUndocumented, validateRequests, validateResponses) are unchanged in v5. v5 type rename fix: OpenAPIV3.Document -> OpenAPIV3.DocumentV3 (src + test). Validated: cardano-services builds clean; openApi unit test passes; no new test failures (the StakePoolBuilder DB test and TxSubmit are the pre-existing Node 22 baseline, unrelated). HTTP request/response validation behaviour is exercised by CI's cardano-services HTTP suite. Resolves #1705. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>