fix: Add keystore decoding step to Android CI and release workflows

Author: BayuBatam2008

.github/workflows/android-build.yml

@@ -21,6 +21,9 @@ jobs:
         java-version: '17'
         distribution: 'temurin'
         cache: gradle
+
+    - name: Decode Keystore
+      run: echo "${{ secrets.ANDROID_KEYSTORE }}" | base64 -d > app/keystore.jks
 
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew

.github/workflows/release.yml

@@ -24,6 +24,9 @@ jobs:
         java-version: '17'
         distribution: 'temurin'
         cache: gradle
+    
+    - name: Decode Keystore
+      run: echo "${{ secrets.ANDROID_KEYSTORE }}" | base64 -d > app/keystore.jks
 
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew