Fix CI workflow (#37)

Author: stevejgordon

.github/workflows/ci.yml

@@ -18,25 +18,27 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 1
     - run: |
         git fetch --prune --unshallow --tags
         echo exit code $?
         git tag --list
-    - uses: actions/setup-dotnet@v1
+    - uses: actions/setup-dotnet@v4
       with:
-          dotnet-version: |
-            9.0.x
+          dotnet-version: 9.0.x
+          source-url: https://nuget.pkg.github.com/nullean/index.json
+      env:
+        NUGET_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
 
     - run: ./build.sh build -s true
       name: Build
     - run: ./build.sh generatepackages -s true
       name: Generate local nuget packages
-    - run: ./build.sh validatepackages -s true
+    # - run: ./build.sh validatepackages -s true
     #   name: "validate *.npkg files that were created"
-    # - run: ./build.sh generateapichanges -s true
+    - run: ./build.sh generateapichanges -s true
       name: "Inspect public API changes"
 
     - name: publish to github package repository