+ re-aligned min maven version to 3.9.0

Author: q3769

.github/workflows/maven-publish-github.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: '8'
+          java-version: '21'
           distribution: 'corretto'
           server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
           settings-path: ${{ github.workspace }} # location for the settings.xml file

.github/workflows/maven-publish-ossrh.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: '8'
+          java-version: '21'
           distribution: 'corretto'
           server-id: central # Value of the distributionManagement/repository/id field of the pom.xml
           server-username: MAVEN_USERNAME

.github/workflows/maven.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: '8'
+          java-version: '21'
           distribution: 'corretto'
           cache: maven
       - name: Build with Maven