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

Bumps org.openapitools:openapi-generator-maven-plugin from 7.15.0 to 7.16.0.

---
updated-dependencies:
- dependency-name: org.openapitools:openapi-generator-maven-plugin
  dependency-version: 7.16.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -1086,7 +1086,7 @@
                 <plugin>
                     <groupId>org.openapitools</groupId>
                     <artifactId>openapi-generator-maven-plugin</artifactId>
-                    <version>7.15.0</version>
+                    <version>7.16.0</version>
                 </plugin>
                 <!--                <plugin>-->
                 <!--            deze plugin is stuk op Windows met Java 11.0.15, zie oa. https://stackoverflow.com/questions/71956115 -->