chore: Update build-unsigned.yaml

.github/workflows/build-unsigned.yaml

@@ -1,5 +1,8 @@
 name: Build Unsigned
 on:
+  pull_request:
+    branches:
+      - '*'
   workflow_dispatch:
 
 jobs:
@@ -8,17 +11,21 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v3
-        with:
-          submodules: recursive
+      
+      - name: Checkout submodules
+        run: git submodule update --init --recursive --remote
+
       - name: Setup Java
         uses: actions/setup-java@v3
         with:
           distribution: 'zulu'
           java-version: 17
+
       - name: Setup Go
         uses: actions/setup-go@v3
         with:
           go-version: "1.20"
+
       - uses: actions/cache@v3
         with:
           path: |
@@ -27,6 +34,7 @@ jobs:
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-
+
       - name: Build
         uses: gradle/gradle-build-action@v2
         with: