build(deps): bump org.openapi.generator from 7.5.0 to 7.6.0

Bumps org.openapi.generator from 7.5.0 to 7.6.0.

---
updated-dependencies:
- dependency-name: org.openapi.generator
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -33,7 +33,7 @@ ignite="2.16.0"
 apacheCxf="3.6.3"
 node="18.17.1"
 modelixBuildtools="1.5.0"
-openapi = "7.5.0"
+openapi = "7.6.0"
 micrometer = "1.12.6"
 dokka = "1.9.20"
 detekt = "1.23.6"