Bump org.codehaus.plexus:plexus from 20 to 22

Bumps [org.codehaus.plexus:plexus](https://github.com/codehaus-plexus/plexus-pom) from 20 to 22.
- [Release notes](https://github.com/codehaus-plexus/plexus-pom/releases)
- [Commits](https://github.com/codehaus-plexus/plexus-pom/commits)

---
updated-dependencies:
- dependency-name: org.codehaus.plexus:plexus
  dependency-version: '22'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

README.md

@@ -1,4 +1,5 @@
 Plexus testing:
 
- * [![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-testing.svg?label=Maven%20Central)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.codehaus.plexus%22%20a%3A%22plexus-testing%22)
-[![Reproducible Builds](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/jvm-repo-rebuild/reproducible-central/master/content/org/codehaus/plexus/plexus-testing/badge.json)](https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/org/codehaus/plexus/plexus-testing/README.md)
+* [![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-testing.svg?label=Maven%20Central)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.codehaus.plexus%22%20a%3A%22plexus-testing%22)
+  [![Reproducible Builds](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/jvm-repo-rebuild/reproducible-central/master/content/org/codehaus/plexus/plexus-testing/badge.json)](https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/org/codehaus/plexus/plexus-testing/README.md)
+

pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.codehaus.plexus</groupId>
     <artifactId>plexus</artifactId>
-    <version>20</version>
+    <version>22</version>
   </parent>
 
   <artifactId>plexus-testing</artifactId>