Fix CI: Install libssl-dev to resolve test runner dependency issue

Author: ANcpLua

.github/workflows/tests.yml

@@ -22,6 +22,9 @@ jobs:
             9.0.x
             10.0.x
 
+      - name: Install libssl
+        run: sudo apt-get update && sudo apt-get install -y libssl-dev
+
       - name: Restore dependencies
         run: |
           dotnet restore SWEN3.Paperless.RabbitMq.sln