Enable tests/io/test_user_agent.py in cudf pandas tests (#15442)

This test was renamed in `test_https_headers.py` in 2.2.0. pandas-dev/pandas#56057

Also this test now "runs" but is skipped because it's marked as a `single_cpu` test which we skip when running these tests.

closes #15422

Authors:
  - Matthew Roeschke (https://github.com/mroeschke)
  - GALI PREM SAGAR (https://github.com/galipremsagar)

Approvers:
  - Vyas Ramasubramani (https://github.com/vyasr)
  - GALI PREM SAGAR (https://github.com/galipremsagar)

URL: #15442

Author: mroeschke

python/cudf/cudf/pandas/scripts/run-pandas-tests.sh

@@ -22,7 +22,7 @@ set -euo pipefail
 # of Pandas installed.
 PANDAS_VERSION=$(python -c "import pandas; print(pandas.__version__)")
 
-PYTEST_IGNORES="--ignore=tests/io/test_user_agent.py \
+PYTEST_IGNORES="--ignore=tests/interchange/test_impl.py \
 --ignore=tests/window/test_dtypes.py \
 --ignore=tests/strings/test_api.py \
 --ignore=tests/window/test_numba.py \