Add workflow to update PowerApps CLI version

This workflow checks for the latest Microsoft.PowerApps.CLI version and creates a PR if a newer version is available:
- 🛠️ Set up a scheduled job to run daily
- 🔍 Fetch the latest CLI version from NuGet
- 📄 Compare with the current version in gulpfile.mjs
- ✉️ Create a PR to update the CLI version if needed
- 🔄 Update gulpfile.mjs with the new version

-Priyanshu

Author: priyanshu92

.github/workflows/update-pac-cli-version.yml

@@ -0,0 +1,62 @@
+# This workflow checks for the latest Microsoft.PowerApps.CLI version and creates a PR if a newer version is available
+name: Update PowerApps CLI Version
+
+on:
+  schedule:
+    - cron: '0 3 * * *' # Runs daily at 03:00 UTC
+  workflow_dispatch:
+
+jobs:
+  check-and-update-cli-version:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Get latest Microsoft.PowerApps.CLI version from NuGet
+        id: get_latest_version
+        run: |
+          latest_version=$(curl -s "https://api.nuget.org/v3-flatcontainer/microsoft.powerapps.cli/index.json" | jq -r '.versions[-1]')
+          echo "latest_version=$latest_version" >> $GITHUB_OUTPUT
+
+      - name: Get current CLI version from gulpfile.mjs
+        id: get_current_version
+        run: |
+          current_version=$(grep -oP "const cliVersion = '\K[0-9.]+(?=')" gulpfile.mjs)
+          echo "current_version=$current_version" >> $GITHUB_OUTPUT
+
+      - name: Compare versions and update if needed
+        id: compare_versions
+        run: |
+          if [ "${{ steps.get_latest_version.outputs.latest_version }}" != "${{ steps.get_current_version.outputs.current_version }}" ]; then
+            echo "update_needed=true" >> $GITHUB_OUTPUT
+          else
+            echo "update_needed=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Create Pull Request to update CLI version
+        if: steps.compare_versions.outputs.update_needed == 'true'
+        uses: peter-evans/create-pull-request@v6
+        with:
+          commit-message: "chore: update PowerApps CLI version to ${{ steps.get_latest_version.outputs.latest_version }}"
+          title: "chore: update PowerApps CLI version to ${{ steps.get_latest_version.outputs.latest_version }}"
+          body: |
+            This PR updates the PowerApps CLI version in `gulpfile.mjs` from ${{ steps.get_current_version.outputs.current_version }} to ${{ steps.get_latest_version.outputs.latest_version }}.
+
+            _Automated PR generated by GitHub Actions._
+          branch: update/cli-version-${{ steps.get_latest_version.outputs.latest_version }}
+          delete-branch: true
+          add-paths: |
+            gulpfile.mjs
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Update gulpfile.mjs with new CLI version
+        if: steps.compare_versions.outputs.update_needed == 'true'
+        run: |
+          sed -i "s/const cliVersion = '[0-9.]*'/const cliVersion = '${{ steps.get_latest_version.outputs.latest_version }}'/" gulpfile.mjs