ci: rename cache key to avoid "android" secret

Author: adil192

.github/workflows/android.yml

@@ -32,9 +32,9 @@ jobs:
             build/
             submodules/flutter/bin/cache/
             /usr/local/lib/android/
-          key: ${{ runner.OS }}-saber_android-${{ hashFiles('**/pubspec.lock') }}
+          key: ${{ runner.OS }}-saberapk-${{ hashFiles('**/pubspec.lock') }}
           restore-keys: |
-            ${{ runner.OS }}-saber_android-
+            ${{ runner.OS }}-saberapk-
 
       - name: Restore platform-agnostic cache
         uses: actions/cache@v5
@@ -154,9 +154,9 @@ jobs:
             build/
             submodules/flutter/bin/cache/
             /usr/local/lib/android/
-          key: ${{ runner.OS }}-saber_android-${{ hashFiles('**/pubspec.lock') }}
+          key: ${{ runner.OS }}-saberapk-${{ hashFiles('**/pubspec.lock') }}
           restore-keys: |
-            ${{ runner.OS }}-saber_android-
+            ${{ runner.OS }}-saberapk-
 
       - name: Setup keystore
         env: