maven step update

Author: stdOWL

.github/workflows/maven.yml

@@ -6,26 +6,21 @@ on:
     branches:
       - "master"
 
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v2
-      with:
-        java-version: '8'
-        distribution: 'adopt'
-    - name: Build with Maven
-      run: mvn -B package --file pom.xml
-      
+jobs: 
   pre-release:
     name: "Pre Release"
     runs-on: "ubuntu-latest"
 
     steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v2
+        with:
+          java-version: '8'
+          distribution: 'adopt'
+      - name: Build with Maven
+        run: mvn -B package --file pom.xml
+
       # ...
       - name: "Build & test"
         run: |