remove labeling trigger for PR and actions set to master (#1666)

.github/workflows/maven-pr-builder.yml

@@ -29,7 +29,7 @@ name: Java PR Builder
 on:
   pull_request:
     branches: [ master ]
-    types: [ opened, reopened, synchronize, labeled, unlabeled ]
+    types: [ opened, reopened, synchronize ]
 
 jobs:
   build:
@@ -38,15 +38,15 @@ jobs:
 
     steps:
     - name: Checkout Code
-      uses: actions/checkout@v2
+      uses: actions/checkout@master
     
     - name: Set up JDK 11
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@master
       with:
         java-version: 11
     
     - name: Cache Maven Dependecies
-      uses: actions/cache@v2
+      uses: actions/cache@master
       with:
         path: ~/.m2/repository
         key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
@@ -57,8 +57,5 @@ jobs:
     - name: Install xvfb
       run: sudo apt-get install -y xvfb
     
-    # This worflow is only for building Pull Requests, the master branch runs Sonar analysis on the main repository.
-    # SonarQube scan does not work for forked repositories.
-    # See https://jira.sonarsource.com/browse/MMF-1371
     - name: Build with Maven
       run: xvfb-run ./mvnw clean verify