Bump maven-plugin.version from 3.2.0 to 3.3.1

Bumps `maven-plugin.version` from 3.2.0 to 3.3.1.

Updates `org.apache.maven.plugins:maven-source-plugin` from 3.2.0 to 3.3.1
- [Release notes](https://github.com/apache/maven-source-plugin/releases)
- [Commits](apache/maven-source-plugin@maven-source-plugin-3.2.0...maven-source-plugin-3.3.1)

Updates `org.apache.maven.plugins:maven-javadoc-plugin` from 3.2.0 to 3.3.1
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](apache/maven-javadoc-plugin@maven-javadoc-plugin-3.2.0...maven-javadoc-plugin-3.3.1)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-source-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.maven.plugins:maven-javadoc-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -33,7 +33,7 @@
         <pitest-maven.coverageThreshold>99</pitest-maven.coverageThreshold>
         <!--Plugins-->
         <maven-compiler-plugin.version>3.13.0</maven-compiler-plugin.version>
-        <maven-plugin.version>3.2.0</maven-plugin.version>
+        <maven-plugin.version>3.3.1</maven-plugin.version>
         <maven-surefire-plugin.version>3.5.1</maven-surefire-plugin.version>
         <!--Profiles-->
         <maven-gpg-plugin.version>3.0.1</maven-gpg-plugin.version>