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

Bumps org.openapitools:openapi-generator-maven-plugin from 7.14.0 to 7.15.0.

---
updated-dependencies:
- dependency-name: org.openapitools:openapi-generator-maven-plugin
  dependency-version: 7.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

hub/pom.xml

@@ -31,7 +31,7 @@
                 <!-- https://openapi-generator.tech/docs/plugins/ -->
                 <groupId>org.openapitools</groupId>
                 <artifactId>openapi-generator-maven-plugin</artifactId>
-                <version>7.14.0</version>
+                <version>7.15.0</version>
                 <executions>
                     <execution>
                         <phase>process-sources</phase>