Potential fix for code scanning alert no. 4: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: igor-vovk

.github/workflows/scala.yml

@@ -31,10 +31,11 @@ jobs:
 
   conformance:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
 
     strategy:
       matrix:
-        config:
           - name: Netty Server
             args: --build-arg launcher=NettyServerLauncher --build-arg config=suite-netty.yaml
           - name: Http4s Server