install .NET 6

Author: ganeshnj

.github/workflows/dotnet.yml

@@ -271,7 +271,7 @@ jobs:
           image: ${{ matrix.container }}
           options: -v ${{ github.workspace }}:/workspace
           run: |
-            curl -sSL https://dot.net/v1/dotnet-install.sh | bash /dev/stdin --channel 3.1
+            curl -sSL https://dot.net/v1/dotnet-install.sh | bash /dev/stdin --channel 6.0
             export PATH=$PATH:~/.dotnet
             dotnet --info
 
@@ -283,7 +283,7 @@ jobs:
         if: matrix.os == 'windows-latest' || matrix.os == 'macos-latest'
         uses: actions/setup-dotnet@3e891b0cb619bf60e2c25674b222b8940e2c1c25 #v4
         with:
-          dotnet-version: 3.1.X
+          dotnet-version: 6.0.X
 
       - name: Test
         if: matrix.os == 'windows-latest' || matrix.os == 'macos-latest'