Fix maven build

.github/workflows/maven-publish.yml

@@ -8,7 +8,6 @@ on:
 
 jobs:
   build:
-    if: ${{ startsWith(github.ref, 'refs/tags/v') }}
     strategy:
       matrix:
         include:
@@ -36,7 +35,7 @@ jobs:
           echo "REVISION=$REVISION" >> $GITHUB_ENV
           echo "IMPLEMENTATION_NAME=$IMPLEMENTATION_NAME" >> $GITHUB_ENV
       - name: Set up JDK 15
-        if: github.ref == 'refs/heads/master'
+        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
         uses: actions/setup-java@v1
         with:
           java-version: 15
@@ -44,7 +43,7 @@ jobs:
           server-username: MAVEN_USERNAME
           server-password: MAVEN_PASSWORD
       - name: Deploy to Maven (Release)
-        if: github.ref == 'refs/heads/master'
+        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
         shell: bash
         run: |
           echo "REVISION: $REVISION"