update .net 7 version for Github Actions

Author: Damien LEROY

.github/workflows/on-release-tag-main.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Setup .NET Core SDK
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.x
+        dotnet-version: 7.0.x
     - name: Restore dependencies
       run: dotnet restore
     - name: Build