build(deps-dev): bump @openapitools/openapi-generator-cli

Bumps [@openapitools/openapi-generator-cli](https://github.com/OpenAPITools/openapi-generator-cli) from 2.30.0 to 2.31.0.
- [Release notes](https://github.com/OpenAPITools/openapi-generator-cli/releases)
- [Commits](OpenAPITools/openapi-generator-cli@v2.30.0...v2.31.0)

---
updated-dependencies:
- dependency-name: "@openapitools/openapi-generator-cli"
  dependency-version: 2.31.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -14,7 +14,7 @@
   "dependencies": {
   },
   "devDependencies": {
-    "@openapitools/openapi-generator-cli": "^2.30.0",
+    "@openapitools/openapi-generator-cli": "^2.31.0",
     "license-checker": "^25.0.1",
     "node": "^25.7.0"
   }