Update main.yml

r0adkll/sign-android-release#84

.github/workflows/main.yml

@@ -629,6 +629,13 @@ jobs:
       - name: Build APK (not usable for production due to unpatched QT library)
         run: cd src; androiddeployqt --input android-qdomyos-zwift-deployment-settings.json --output ${{ github.workspace }}/output/android/ --android-platform android-31 --gradle --aab --release
 
+      - name: Setup build tool version variable
+        shell: bash
+        run: |
+          BUILD_TOOL_VERSION=$(ls /usr/local/lib/android/sdk/build-tools/ | tail -n 1)
+          echo "BUILD_TOOL_VERSION=$BUILD_TOOL_VERSION" >> $GITHUB_ENV
+          echo Last build tool version is: $BUILD_TOOL_VERSION
+
       - uses: r0adkll/sign-android-release@v1
         name: Sign app APK
         # ID used to access action output
@@ -639,6 +646,8 @@ jobs:
           alias: ${{ secrets.ALIAS }}
           keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }}
           keyPassword: ${{ secrets.KEY_PASSWORD }}
+        env:
+          BUILD_TOOLS_VERSION: ${{ env.BUILD_TOOL_VERSION }}                 
 
       - name: Deploy to Play Store
         uses: r0adkll/upload-google-play@v1