Add `refresh_events` to `CertHandler` (#108) #29

Job	Run time
release / Quality Checks / Check the CHARMHUB_TOKEN secret	1s
release / Quality Checks / Inclusive naming / check	9s
release / Quality Checks / Linting / Lint	9s
release / Quality Checks / Scenario Tests / Scenario tests	10s
release / Quality Checks / Static Analysis / Static Analysis of Charm	12s
release / Quality Checks / Static Analysis / Static Analysis of Libs	13s
release / Quality Checks / Unit Tests / Unit tests	19s
release / Quality Checks / Check libraries	25s
release / Quality Checks / Integration Tests / Integration Tests	14m 2s
release / Quality Checks / CodeQL analysis / Analyze (python)	2m 12s
release / Release any bumped charm library	37s
release / Release Charm and Libraries / Build the charms for ARM	0s
release / Release Charm and Libraries / Build the charms	2m 50s
release / Release Charm and Libraries / Release arm64 to CharmHub	0s
release / Release Charm and Libraries / Release to CharmHub (observability-libs_ubuntu-20.04-amd64.charm)	49s
release / Release Charm and Libraries / Charm List	0s
	22m 8s

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