fix lint.yml

Author: KirillKurdyukov

.github/workflows/lint.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '8.0.x'
+          dotnet-version: 9.0.x
       - name: Restore
         run: dotnet restore ${{ matrix.source-dir }}${{ matrix.solutionFile }}
       - name: Install ReSharper
@@ -50,7 +50,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '8.0.x'
+          dotnet-version: 9.0.x
       - name: Restore
         run: dotnet restore ${{ matrix.solutionPath }}
       - name: Inspect code