Update gmsh extra to meshwell for palace tests in CI

Author: nikosavola

.github/workflows/test_code.yml

@@ -123,7 +123,7 @@ jobs:
         run: |
           palace --help || echo "Palace help failed but container exists"
       - name: Test with pytest
-        run: sudo env "PATH=$PATH" "$(which uv)" run --extra dev --extra gmsh pytest gplugins/palace -v
+        run: sudo env "PATH=$PATH" "$(which uv)" run --extra dev --extra meshwell pytest gplugins/palace -v
 
   test_code_coverage:
     runs-on: ubuntu-latest