Update README in 3.x branch

Author: slawekjaranowski

README.md

@@ -17,15 +17,14 @@
 Contributing to [Apache Maven Clean Plugin](https://maven.apache.org/plugins/maven-clean-plugin/)
 ======================
 
-[![ASF Jira](https://img.shields.io/endpoint?url=https%3A%2F%2Fmaven.apache.org%2Fbadges%2Fasf_jira-MCLEAN.json)][jira]
 [![Apache License, Version 2.0, January 2004](https://img.shields.io/github/license/apache/maven.svg?label=License)][license]
+[![Maven Central](https://img.shields.io/maven-central/v/org.apache.maven.plugins/maven-clean-plugin.svg?label=Maven%20Central&versionPrefix=3.)](https://search.maven.org/artifact/org.apache.maven.plugins/maven-clean-plugin)
 [![Maven Central](https://img.shields.io/maven-central/v/org.apache.maven.plugins/maven-clean-plugin.svg?label=Maven%20Central)](https://search.maven.org/artifact/org.apache.maven.plugins/maven-clean-plugin)
-[![Reproducible Builds](https://img.shields.io/badge/Reproducible_Builds-ok-green?labelColor=blue)](https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/org/apache/maven/plugins/maven-clean-plugin/README.md)
+[![Reproducible Builds](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/jvm-repo-rebuild/reproducible-central/master/content/org/apache/maven/plugins/maven-clean-plugin/badge.json)](https://github.com/jvm-repo-rebuild/reproducible-central/blob/master/content/org/apache/maven/plugins/maven-clean-plugin/README.md)
 [![Jenkins Status](https://img.shields.io/jenkins/s/https/ci-maven.apache.org/job/Maven/job/maven-box/job/maven-clean-plugin/job/master.svg?)][build]
 [![Jenkins tests](https://img.shields.io/jenkins/t/https/ci-maven.apache.org/job/Maven/job/maven-box/job/maven-clean-plugin/job/master.svg?)][test-results]
 
-
-You have found a bug or you have an idea for a cool new feature? Contributing
+You have found a bug, or you have an idea for a cool new feature? Contributing
 code is a great way to give something back to the open source community. Before
 you dig right into the code, there are a few guidelines that we need
 contributors to follow so that we can have a chance of keeping on top of
@@ -34,11 +33,10 @@ things.
 Getting Started
 ---------------
 
-+ Make sure you have a [JIRA account](https://issues.apache.org/jira/).
 + Make sure you have a [GitHub account](https://github.com/signup/free).
-+ If you're planning to implement a new feature, it makes sense to discuss your changes 
-  on the [dev list][ml-list] first. 
-  This way you can make sure you're not wasting your time on something that isn't 
++ If you're planning to implement a new feature, it makes sense to discuss your changes
+  on the [dev list][ml-list] first.
+  This way you can make sure you're not wasting your time on something that isn't
   considered to be in Apache Maven's scope.
 + Submit a ticket for your issue, assuming one does not already exist.
   + Clearly describe the issue, including steps to reproduce when it is a bug.
@@ -57,44 +55,30 @@ There are some guidelines which will make applying PRs easier for us:
 + Respect the original code style: by using the same [codestyle][code-style],
   patches should only highlight the actual difference, not being disturbed by any formatting issues:
   + Only use spaces for indentation.
-  + Create minimal diffs - disable on save actions like reformat source code or organize imports. 
+  + Create minimal diffs - disable on save actions like reformat source code or organize imports.
     If you feel the source code should be reformatted, create a separate PR for this change.
   + Check for unnecessary whitespace with `git diff --check` before committing.
-+ Make sure your commit messages are in the proper format. Your commit message should contain the key of the JIRA issue.
-```
-[MCLEAN-XXX] - Subject of the JIRA Ticket
- Optional supplemental description.
-```
 + Make sure you have added the necessary tests (JUnit/IT) for your changes.
 + Run all the tests with `mvn -Prun-its verify` to assure nothing else was accidentally broken.
 + Submit a pull request to the repository in the Apache organization.
-+ Update your JIRA ticket and include a link to the pull request in the ticket.
 
 If you plan to contribute on a regular basis, please consider filing a [contributor license agreement][cla].
 
-Making Trivial Changes
-----------------------
-
-For changes of a trivial nature to comments and documentation, it is not always
-necessary to create a new ticket in JIRA.  In this case, it is appropriate to
-start the first line of a commit with '(doc)' instead of a ticket number.
-
 Additional Resources
 --------------------
 
 + [Contributing patches](https://maven.apache.org/guides/development/guide-maven-development.html#Creating_and_submitting_a_patch)
-+ [Apache Maven Clean JIRA project page][jira]
 + [Contributor License Agreement][cla]
 + [General GitHub documentation](https://help.github.com/)
 + [GitHub pull request documentation](https://help.github.com/send-pull-requests/)
-+ [Apache Maven Twitter Account](https://twitter.com/ASFMavenProject)
-+ #Maven IRC channel on freenode.org
++ [Apache Maven X Account](https://x.com/ASFMavenProject)
++ [Apache Maven Bluesky Account](https://bsky.app/profile/maven.apache.org)
++ [Apache Maven Mastodon Account](https://mastodon.social/deck/@[email protected])
 
-[jira]: https://issues.apache.org/jira/projects/MCLEAN/
 [license]: https://www.apache.org/licenses/LICENSE-2.0
 [ml-list]: https://maven.apache.org/mailing-lists.html
 [code-style]: https://maven.apache.org/developers/conventions/code.html
 [cla]: https://www.apache.org/licenses/#clas
 [maven-wiki]: https://cwiki.apache.org/confluence/display/MAVEN/Index
-[test-results]: https://ci-maven.apache.org/job/Maven/job/maven-box/job/maven-clean-plugin/job/master/lastCompletedBuild/testReport/
-[build]: https://ci-maven.apache.org/job/Maven/job/maven-box/job/maven-clean-plugin/job/master/
+[test-results]: https://ci-maven.apache.org/job/Maven/job/maven-box/job/maven-clean-plugin/job/maven-clean-plugin-3.x/lastCompletedBuild/testReport/
+[build]: https://ci-maven.apache.org/job/Maven/job/maven-box/job/maven-clean-plugin/job/maven-clean-plugin-3.x/