Bump org.openapitools:openapi-generator-maven-plugin

Bumps org.openapitools:openapi-generator-maven-plugin from 7.20.0 to 7.21.0.

---
updated-dependencies:
- dependency-name: org.openapitools:openapi-generator-maven-plugin
  dependency-version: 7.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -1746,7 +1746,7 @@ under the License.
         <plugin>
           <groupId>org.openapitools</groupId>
           <artifactId>openapi-generator-maven-plugin</artifactId>
-          <version>7.19.0</version>
+          <version>7.21.0</version>
         </plugin>
 
         <plugin>