fix: enable pytest-marker-report in pre-merge CI (#7457)

Signed-off-by: Neelay Shah <neelays@nvidia.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: Dmitry Tokarev <dtokarev@nvidia.com>

.github/workflows/pre-merge.yml

@@ -61,9 +61,6 @@ jobs:
     - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
     - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1
       timeout-minutes: 3
-      # TODO: enable this once OPS-3006 is done
-      env:
-        SKIP: pytest-marker-report
 
   rust-tests:
     needs: changed-files