Fix deprecated "::set-output" usage in CI for 2.13 too

Author: cowtowncoder

.github/workflows/main.yml

@@ -47,7 +47,7 @@ jobs:
       run: ./mvnw -B -q -ff -ntp verify
     - name: Extract project Maven version
       id: projectVersion
-      run: echo ::set-output name=version::$(./mvnw org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate -DforceStdout -Dexpression=project.version -q)
+      run: echo "version=$(./mvnw org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate -DforceStdout -Dexpression=project.version -q)" >> $GITHUB_OUTPUT
     - name: Verify Android SDK Compatibility
       if: matrix.java_version == '8'
       run: ./mvnw -B -q -ff -ntp -DskipTests animal-sniffer:check