fix(ci): workflows should have yaml extension

.github/workflows/update-submodule.yaml

@@ -0,0 +1,31 @@
+name: Update submodules
+on:
+  repository_dispatch:
+    types: update
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Update module
+        run: |
+          pushd WinApps-Launcher
+            branch=$(git rev-parse --abbrev-ref origin/HEAD | sed "s|origin/||")
+            git config remote.origin.fetch "+refs/heads/$branch:refs/remotes/origin/$branch"
+            git fetch --depth=1 origin "refs/heads/$branch"
+          popd
+
+          git submodule update --init --remote WinApps-Launcher
+
+      - name: Commit and push
+        uses: EndBug/add-and-commit@v9
+        with:
+          add: "WinApps-Launcher"
+          default_author: github_actions
+          message: "Update submodules"
+          push: true
+          fetch: true