Update parent and add actions.

.github/workflows/release.yml

@@ -0,0 +1,37 @@
+name: Release
+
+on:
+  workflow_dispatch: {}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout
+      uses: actions/checkout@v2
+      with:
+        token: ${{ secrets.GIT_ACTION_TOKEN }}
+    - name: git-configure
+      run: |
+          git config user.email "actions@github.com"
+          git config user.name "GitHub Actions"
+    - name: setup
+      uses: actions/setup-java@v1
+      with:
+        java-version: 11
+        server-id: sonatype-nexus
+        server-username: SERVER_USERNAME
+        server-password: SERVER_PASSWORD
+        gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+        gpg-passphrase: GPG_PASSPHRASE
+    - name: dependencies
+      run: mvn -B -q dependency:go-offline
+    - name: prepare
+      run: mvn -B release:prepare
+    - name: perform
+      run: mvn -B release:perform
+      env:
+        SERVER_USERNAME: ${{ secrets.SONATYPE_NEXUS_USERNAME }}
+        SERVER_PASSWORD: ${{ secrets.SONATYPE_NEXUS_PASSWORD }}
+        GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+