Log Message:
py-prometheus_client: updated to 0.12.0

0.12.0
[FEATURE] Exemplar support (excludes multiprocess)
[ENHANCEMENT] Add support for Python 3.10
[ENHANCEMENT] Restricted Registry will handle metrics added after restricting
[ENHANCEMENT] Raise a more helpful error if a metric is not observable
[BUGFIX] Fix instance_ip_grouping_key not working on MacOS
[BUGFIX] Fix assertion error from favicion.ico with Python 2.7