chore(deps): bump camunda-release-parent from 3.8.1 to 3.9.1 (#311)

Bumps [camunda-release-parent](https://github.com/camunda/camunda-release-parent) from 3.8.1 to 3.9.1.
- [Release notes](https://github.com/camunda/camunda-release-parent/releases)
- [Commits](camunda/camunda-release-parent@3.8.1...3.9.1)

---
updated-dependencies:
- dependency-name: org.camunda:camunda-release-parent
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -10,7 +10,7 @@
     <parent>
         <groupId>org.camunda</groupId>
         <artifactId>camunda-release-parent</artifactId>
-        <version>3.8.1</version>
+        <version>3.9.1</version>
         <!-- do not remove empty tag - http://jira.codehaus.org/browse/MNG-4687 -->
         <relativePath />
     </parent>