feat: add GitHub workflow for automated daily NuGet package updates

Author: stho32

.github/workflows/nuget-update.yml

@@ -0,0 +1,91 @@
+name: NuGet Package Update
+
+on:
+  schedule:
+    # Runs at 00:00 UTC every day
+    - cron: '0 0 * * *'
+  # Allow manual triggering
+  workflow_dispatch:
+
+env:
+  DOTNET_VERSION: "9.x.x"
+  SOLUTION_DIR: "VisualPairCoding"
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  update-nuget:
+    name: Update NuGet Packages
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          # Fetch all history for all branches and tags
+          fetch-depth: 0
+
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: ${{ env.DOTNET_VERSION }}
+
+      - name: Install NuGet updater
+        run: dotnet tool install -g dotnet-outdated-tool
+
+      - name: Set up Git identity
+        run: |
+          git config --global user.name 'github-actions[bot]'
+          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
+
+      - name: Check for outdated packages
+        id: check-updates
+        run: |
+          cd Source/${{ env.SOLUTION_DIR }}
+          # Get list of outdated packages
+          dotnet list package --outdated --include-transitive --highest-minor | tee outdated.txt
+          # Check if there are any updates available
+          if grep -q '> ' outdated.txt; then
+            echo "updates_available=true" >> $GITHUB_OUTPUT
+          else
+            echo "No package updates found."
+            echo "updates_available=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Update packages
+        if: steps.check-updates.outputs.updates_available == 'true'
+        run: |
+          cd Source/${{ env.SOLUTION_DIR }}
+          # Update all packages to latest version
+          dotnet outdated -u
+          # Restore packages after update
+          dotnet restore
+
+      - name: Build and test
+        if: steps.check-updates.outputs.updates_available == 'true'
+        run: |
+          cd Source/${{ env.SOLUTION_DIR }}
+          dotnet build --configuration Release --no-restore
+          dotnet test --no-build --verbosity normal --logger "console;verbosity=normal"
+
+      - name: Create Pull Request
+        if: steps.check-updates.outputs.updates_available == 'true' && github.event_name == 'schedule'
+        uses: peter-evans/create-pull-request@v5
+        with:
+          commit-message: "chore: update NuGet packages"
+          title: "chore: update NuGet packages"
+          body: |
+            Automated update of NuGet packages.
+            
+            This PR was automatically generated by the NuGet package update workflow.
+          branch: feature/update-nuget-packages
+          delete-branch: true
+          draft: false
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Commit and push changes
+        if: steps.check-updates.outputs.updates_available == 'true' && github.event_name == 'workflow_dispatch'
+        run: |
+          git add .
+          git diff --quiet && git diff --staged --quiet || \
+          (git commit -m "chore: update NuGet packages" && \
+           git push origin HEAD:main)

Requirements/R0100-workflow-for-automatic-nuget-updates.md

@@ -0,0 +1,10 @@
+# Automatische Aktualisierungen der Nuget-Abhängigkeiten der enthaltenen Projekte
+
+## Zusammenfassung
+
+Wir möchten gerne einen zusätzlichen github-Workflow haben, der 
+- automatisch täglich nach nuget-Aktualisierungen für die enthalten dotnet-Projekte sucht
+- Aktualisierungen installiert
+- Prüft, ob der Build und die Tests funktionieren
+- Wenn ja, dann soll automatisch ein neuer Commit / Push erzeugt werden, der den normalen Build/Release Workflow indirekt startet
+