Use .slnx explicitly for tests with coverage

Author: ANcpLua

.github/workflows/tests.yml

@@ -32,7 +32,7 @@ jobs:
 
       - name: Run tests with coverage
         run: |
-          dotnet test SWEN3.Paperless.RabbitMq.sln --no-build --configuration Release \
+          dotnet test SWEN3.Paperless.RabbitMq.slnx --no-build --configuration Release \
             --collect:"XPlat Code Coverage" \
             --logger:"console;verbosity=detailed"