Using correct version of .net

Author: arnaudleclerc

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.x
+        dotnet-version: 5.0.x
     - name: Install GitVersion
       uses: gittools/actions/gitversion/setup@v0.9.6
       with: