Pin .NET SDK version

Use the same .NET SDK version to publish NuGet packages as to build them where there is no global.json to specify it.

.github/workflows/build.yml

@@ -25,6 +25,9 @@ jobs:
     name: ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
 
+    outputs:
+      dotnet-sdk-version: ${{ steps.setup-dotnet.outputs.dotnet-version }}
+
     strategy:
       fail-fast: false
       matrix:
@@ -45,6 +48,7 @@ jobs:
 
       - name: Setup .NET SDK
         uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2 # v3.2.0
+        id: setup-dotnet
 
       - name: Setup NuGet cache
         uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3.3.2
@@ -88,6 +92,8 @@ jobs:
 
     - name: Setup .NET SDK
       uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2 # v3.2.0
+      with:
+        dotnet-version: ${{ needs.build.outputs.dotnet-sdk-version }}
 
     - name: Validate NuGet packages
       shell: pwsh
@@ -106,7 +112,7 @@ jobs:
         }
 
   publish-github:
-    needs: validate-packages
+    needs: [ build, validate-packages ]
     permissions:
       packages: write
     runs-on: ubuntu-latest
@@ -123,12 +129,14 @@ jobs:
 
     - name: Setup .NET SDK
       uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2 # v3.2.0
+      with:
+        dotnet-version: ${{ needs.build.outputs.dotnet-sdk-version }}
 
     - name: Publish NuGet packages to GitHub Packages
       run: dotnet nuget push "*.nupkg" --api-key ${{ secrets.GITHUB_TOKEN }} --skip-duplicate --no-symbols --source https://nuget.pkg.github.com/${{ github.repository_owner }}/index.json
 
   publish-nuget:
-    needs: validate-packages
+    needs: [ build, validate-packages ]
     runs-on: ubuntu-latest
     if: |
       github.event.repository.fork == false &&
@@ -142,6 +150,8 @@ jobs:
 
     - name: Setup .NET SDK
       uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2 # v3.2.0
+      with:
+        dotnet-version: ${{ needs.build.outputs.dotnet-sdk-version }}
 
     - name: Push NuGet packages to NuGet.org
       run: dotnet nuget push "*.nupkg" --api-key ${{ secrets.NUGET_TOKEN }} --skip-duplicate --source https://api.nuget.org/v3/index.json