CI: codecov doesn't support file parameter anymore

Author: fingolfin

.github/workflows/CI.yml

@@ -54,5 +54,3 @@ jobs:
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v5
-        with:
-          file: lcov.info