Update dotnet-build.yml to add merge_group trigger (#2567)

* Update dotnet-build.yml

* Update dotnet-build.yml

.github/workflows/dotnet-build.yml

@@ -9,6 +9,8 @@ on:
     branches: [ "main" ]
   push:
     branches: [ "main" ]
+  merge_group:
+    types: [checks_requested]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref }}
@@ -31,9 +33,14 @@ jobs:
           filters: |
             dotnet:
               - "dotnet/**"
+            workflows:
+              - ".github/workflows/**"
       - name: dotnet has changes
         run: echo "dotnet has changes"
         if: steps.filter.outputs.dotnet == 'true'
+      - name: workflows has changes
+        run: echo "workflows has changes"
+        if: steps.filter.outputs.workflows == 'true'
   build:
     name: Dotnet Build
     runs-on: ubuntu-latest
@@ -157,4 +164,4 @@ jobs:
         ls -R ./output/nightly
         dotnet nuget push --api-key ${{ secrets.MYGET_TOKEN }} --source "https://www.myget.org/F/agentchat/api/v3/index.json" ./output/nightly/*.nupkg --skip-duplicate
       env:
-        MYGET_TOKEN: ${{ secrets.MYGET_TOKEN }}
+        MYGET_TOKEN: ${{ secrets.MYGET_TOKEN }}