ci: parallelize builds

.github/workflows/release-packaging.yml

@@ -40,6 +40,21 @@ jobs:
     timeout-minutes: 30
     needs: [check]
 
+  build:
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    needs: [check]
+
+    strategy:
+      matrix:
+        include: 
+          - os: ubuntu-22.04
+            command: export-linux
+          - os: windows-2022
+            command: export-windows
+          - os: macos-12
+            command: export-mac
+
     steps:
       - uses: actions/checkout@v4
         with:
@@ -60,8 +75,13 @@ jobs:
 
       - uses: ./.github/actions/setup-x11-drivers
 
+      # Retry multiple times, always in CI, godot freeze when reimporting assets
       - name: Export
-        run: just export
+        uses: nick-fields/retry@v2
+        with:
+          timeout_minutes: 10
+          max_attempts: 3
+          command: just ${{ matrix.command }}
 
       - name: Upload artifact
         uses: actions/upload-artifact@v4