Bump org.apache:apache from 29 to 31

Bumps [org.apache:apache](https://github.com/apache/maven-apache-parent) from 29 to 31.
- [Release notes](https://github.com/apache/maven-apache-parent/releases)
- [Commits](https://github.com/apache/maven-apache-parent/commits)

---
updated-dependencies:
- dependency-name: org.apache:apache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 4c0a423..7914dd5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache</groupId>
     <artifactId>apache</artifactId>
-    <version>29</version>
+    <version>31</version>
   </parent>
   <groupId>org.apache.creadur.tentacles</groupId>
   <artifactId>apache-tentacles</artifactId>