Update actions workflow

.github/stale.yml

@@ -1,16 +0,0 @@
-# Number of days of inactivity before an issue becomes stale
-daysUntilStale: 60
-# Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
-# Issues with these labels will never be considered stale
-exemptLabels:
-  - [‼] high priority
-# Label to use when marking an issue as stale
-staleLabel: Old
-# Comment to post when marking an issue as stale. Set to `false` to disable
-markComment: >
-  This issue has been automatically marked as stale because it has not had
-  recent activity. It will be closed if no further activity occurs. Thank you
-  for your contributions.
-# Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: false

.github/workflows/build.yml

@@ -0,0 +1,20 @@
+name: "build"
+
+on: ["pull_request", "push"]
+ 
+jobs:
+  build:
+    strategy:
+      matrix:
+        java: ["1.8", "11"]
+        os: ["ubuntu-18.04"]
+    runs-on: "${{ matrix.os }}"
+    steps:
+    - name: "Checkout Repository"
+      uses: "actions/checkout@v2.3.4"
+    - name: "Setup JDK ${{ matrix.java }}"
+      uses: "actions/setup-java@v1.4.3"
+      with:
+          java-version: "${{ matrix.java }}"
+    - name: "Clean Build"
+      run: "./gradlew clean build"

.github/workflows/gradle.yml

@@ -1,30 +0,0 @@
-name: Java CI
-
-on:
-  push:
-    branches:
-    - 'v5'
-    - 'v6'
-  pull_request:
-    branches:
-    - 'v5'
-    - 'v6'
- 
-jobs:
-  test:
-    runs-on: ubuntu-18.04
-    strategy:
-      matrix:
-        java: [1.8, 1.11]
-
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v2.0.0
-    - name: Setup Java JDK 1.8
-      uses: actions/setup-java@v1.3.0
-      with:
-        java-version: 1.8
-    - name: Gradle Wrapper Validation
-      uses: gradle/wrapper-validation-action@v1
-    - name: Test with Gradle
-      run: ./gradlew clean build

.github/workflows/validate-gradle-wrapper.yml

@@ -0,0 +1,12 @@
+name: "validate gradle wrapper"
+
+on: ["pull_request", "push"]
+
+jobs:
+  build:
+    runs-on: "ubuntu-18.04"
+    steps:
+      - name: "Checkout Repository"
+        uses: "actions/checkout@v2.3.4"
+      - name: "Validate Gradle Wrapper"
+        uses: "gradle/wrapper-validation-action@v1.0.3"