Improve Cache key

Author: markushi

.github/workflows/agp-matrix.yml

@@ -56,7 +56,7 @@ jobs:
           path: |
             ~/.android/avd/*
             ~/.android/adb*
-          key: avd-api-30
+          key: avd-api-30-x86_64
 
       - name: Create AVD and generate snapshot for caching
         if: steps.avd-cache.outputs.cache-hit != 'true'