update tfm in release script

Author: lofcz

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: '7.0.x'
+        dotnet-version: '9.0.x'
 
     # Setup
     - name: Install GitVersion