Add .NET 9 to actions

.github/workflows/packages.yml

@@ -36,7 +36,7 @@ jobs:
           echo "BRANCH_NAME=${BRANCH_NAME}" >> $GITHUB_ENV
           echo "PACKAGE_PREFIX=${PACKAGE_PREFIX}" >> $GITHUB_ENV
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Verify commit exists in branch
         run: |
           if [[ "${{ github.ref }}" == refs/tags/* && "${{ github.event_name }}" == "release" && ("${{ github.event.action }}" == "published" || "${{ github.event.action }}" == "prereleased")]]; then
@@ -60,6 +60,9 @@ jobs:
 #        with:
 #          java-version: '17'
 #          distribution: 'adopt'
+      - uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 9.x
 #      - name: Install SonarScanner for .NET
 #        run: dotnet tool install --global dotnet-sonarscanner
 #      - name: Install Coverlet for code coverage

.github/workflows/pr.yml

@@ -33,5 +33,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 9.x
       - name: 'Run: Compile, Test, Pack'
         run: ./build.cmd Compile Test Pack