Update main.yml: downgrade Android SDK to 8.0, hoping to work with Java 8 still

.github/workflows/main.yml

@@ -10,12 +10,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: '500'
-      - name: Install JDK 8
-        uses: actions/setup-java@v4
-        with:
-          distribution: 'temurin' # See 'Supported distributions' for available options
-          java-version: '17'
-          mvn-toolchain-id: 'JavaSE-17'
       - name: Install JDK 8
         uses: actions/setup-java@v4
         with:
@@ -26,6 +20,7 @@ jobs:
         uses: android-actions/setup-android@v3
         with:
           log-accepted-android-sdk-licenses: 'false'
+          cmdline-tools-version: 9123335  # This corresponds to human-friendly version number 8.0
       - name: Start MongoDB
         uses: supercharge/mongodb-github-action@1.10.0
         with: