github actions: decrypt large secret for build

Author: softartdev

.github/workflows/build_only.yml

@@ -28,5 +28,9 @@ jobs:
         with:
           cache-read-only: false
           cache-overwrite-existing: true
+      - name: Decrypt large secret
+        run: ./.github/scripts/decrypt_secret.sh
+        env:
+          LARGE_SECRET_PASSPHRASE: ${{ secrets.LARGE_SECRET_PASSPHRASE }}
       - name: Build
         run: ./gradlew build