chore: Configure VM for release workflow.

.github/workflows/release.yml

@@ -16,6 +16,7 @@ name: Release
 on:
   push:
     branches: [ main ]
+  workflow_dispatch:
 jobs:
   release:
     runs-on: ubuntu-latest
@@ -24,6 +25,16 @@ jobs:
       uses: actions/checkout@v2
       with:
         token: ${{ secrets.SYNCED_GITHUB_TOKEN_REPO }}
+
+    - name: set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+
+    - name: Uninstall NDK
+      run: |
+        sudo ${ANDROID_HOME}/tools/bin/sdkmanager --uninstall 'ndk-bundle'
+
     - name: Build APKs
       run: |
         echo "Generating ApiDemos (Java) APKs"