ci: add GitHub action to update NuGet package lock file (#497)

Author: calebkiage

.github/workflows/update-lock-file.yml

@@ -0,0 +1,54 @@
+name: '[dependabot] Update NuGet lock file'
+
+on:
+  pull_request:
+    types: [labeled, opened, synchronize, reopened]
+    branches: [ main ]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  update-lock-file:
+    runs-on: ubuntu-latest
+
+    if: ${{ (github.actor == 'dependabot[bot]' && github.event.action != 'labeled') || (github.event.action == 'labeled' && github.event.label.name == 'ci:update-lockfile') }}
+    steps:
+      - name: Dependabot metadata
+        if: ${{ github.actor == 'dependabot[bot]' }}
+        id: metadata
+        uses: dependabot/[email protected]
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+      - uses: actions/checkout@v4
+        if: ${{ github.actor == 'dependabot[bot]' && steps.metadata.outputs.package-ecosystem == 'nuget' || github.event.action == 'labeled' }}
+        with:
+          ref: ${{ github.head_ref }}
+      - name: Setup .NET
+        if: ${{ github.actor == 'dependabot[bot]' && steps.metadata.outputs.package-ecosystem == 'nuget' || github.event.action == 'labeled' }}
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 8.0.x
+      - name: Restore dependencies
+        if: ${{ github.actor == 'dependabot[bot]' && steps.metadata.outputs.package-ecosystem == 'nuget' || github.event.action == 'labeled' }}
+        run: dotnet restore
+      - uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: "chore: update NugGet lock file"
+          file_pattern: '*/packages.lock.json'
+      - name: Remove PR trigger label
+        if: ${{ github.event.action == 'labeled'}}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        uses: actions/github-script@v7
+        with:
+          script: |
+            try {
+              await github.rest.issues.removeLabel({
+                owner: '${{github.repository_owner}}',
+                repo: '${{github.event.repository.name}}',
+                issue_number: ${{github.event.pull_request.number}},
+                name: '${{github.event.label.name}}'
+              });
+            } catch(e){}