Fix gh workflows

Author: smbecker

.github/workflows/ci.yaml

@@ -36,6 +36,6 @@ jobs:
     - name: setup dotnet
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: '9.0.x'
     - name: run tests
       run: dotnet test --logger "trx;verbosity=detailed"

.github/workflows/codeql.yaml

@@ -34,7 +34,7 @@ jobs:
     - name: setup dotnet
       uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: '9.0.x'
     - name: build
       run: dotnet build --configuration Debug
     - name: analyze

.github/workflows/publish-to-nuget.yaml

@@ -35,7 +35,7 @@ jobs:
     - name: setup dotnet
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.x'
+        dotnet-version: '9.0.x'
     - name: create nuget packages
       run: dotnet pack -c release --include-symbols -o artifacts
     - name: publish to nuget.org