Bump io.openapiprocessor:json-schema-validator-bom from 2025.3 to 2025.4

Bumps [io.openapiprocessor:json-schema-validator-bom](https://github.com/openapi-processor/openapi-parser) from 2025.3 to 2025.4.
- [Release notes](https://github.com/openapi-processor/openapi-parser/releases)
- [Commits](openapi-processor/openapi-parser@v2025.3...v2025.4)

---
updated-dependencies:
- dependency-name: io.openapiprocessor:json-schema-validator-bom
  dependency-version: '2025.4'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ ktlint = "1.1.0"
 okio = "3.15.0"
 serialization = "1.8.1"
 benchmark = "0.4.14"
-openapi = "2025.3"
+openapi = "2025.4"
 jackson = "2.20.0"
 
 [plugins]