Upgrade to latest Liberty Plug-in versions

[natalie-bernhard]

Upgrade to the latest Liberty Maven and Gradle Plug-ins Releases

*Make sure to also update the Add to an existing application snippets on the start page via the website code

Steps

1. Get the latest versions of the Liberty Plug-ins

• https://github.com/OpenLiberty/ci.maven/releases
• https://github.com/OpenLiberty/ci.gradle/releases

2. Create a new feature branch off of main branch

3. Update Liberty Maven Plug-in version

• https://github.com/OpenLiberty/start.openliberty.io/blob/main/src/main/resources/templates/maven/pom.xml

    <plugin>
      <groupId>io.openliberty.tools</groupId>
      <artifactId>liberty-maven-plugin</artifactId>
      <version>...</version>
    </plugin>
  

4. Update the Liberty Gradle Plug-in version

• https://github.com/OpenLiberty/start.openliberty.io/blob/main/src/main/resources/templates/gradle/build.gradle

    plugins {
        id 'war'
        id 'io.openliberty.tools.gradle.Liberty' version '...'
    }
  

5. Update the Liberty Maven Plug-in version used by the Open Liberty Starter service itself. This step is like Step 3.

• https://github.com/OpenLiberty/start.openliberty.io/blob/main/pom.xml

6. Open a pull request to merge the new feature branch (step 2) targeting branch staging.