add specific panel version pin for test_python env #304

Job	Run time
checks / other-checks	1m 3s
checks / check-style	1m 4s
wheel-build / compute-matrix	3s
conda-python-build / compute-matrix	2s
conda-python-build / build (11.8.0, ubuntu22.04, amd64, 3.9)	3m 24s
conda-python-build / build (11.8.0, ubuntu22.04, arm64, 3.9)	2m 32s
conda-python-build / build (11.8.0, ubuntu22.04, amd64, 3.10)	3m 9s
conda-python-build / build (11.8.0, ubuntu22.04, arm64, 3.10)	2m 31s
conda-python-build / build (12.0.1, ubuntu22.04, amd64, 3.9)	3m 10s
conda-python-build / build (12.0.1, ubuntu22.04, arm64, 3.9)	2m 28s
conda-python-build / build (12.0.1, ubuntu22.04, amd64, 3.10)	3m 11s
conda-python-build / build (12.0.1, ubuntu22.04, arm64, 3.10)	2m 34s
wheel-build / 11.8.0, 3.10, amd64, centos7	4m 32s
wheel-build / 12.0.1, 3.10, amd64, centos7	4m 13s
wheel-tests / compute-matrix	3s
wheel-tests / 12.0.1, 3.10, amd64, ubuntu20.04, v100	10m 7s
docs-build / build	12m 56s
conda-python-tests / compute-matrix	2s
conda-notebook-tests / build	13m 4s
conda-python-tests / tests (11.4.3, centos7, amd64, 3.9, v100, earliest)	6m 19s
conda-python-tests / tests (11.8.0, ubuntu22.04, amd64, 3.10, v100, latest)	6m 31s
conda-python-tests / tests (12.0.1, ubuntu22.04, amd64, 3.10, v100, latest)	7m 35s
conda-python-tests / tests (12.0.1, ubuntu22.04, arm64, 3.10, a100, latest)	6m 4s
pr-builder / run	1s
	1h 36m 38s

Provide feedback