fix _ca_folder_path (#78) #51

Job	Run time
release / Quality Checks / Check the CHARMHUB_TOKEN secret	1s
release / Quality Checks / Static Analysis / Static Analysis of Charm	17s
release / Quality Checks / Inclusive naming / check	6s
release / Quality Checks / Scenario Tests / Scenario tests	18s
release / Quality Checks / Linting / Lint	14s
release / Quality Checks / Static Analysis / Static Analysis of Libs	25s
release / Quality Checks / Unit Tests / Unit tests	22s
release / Quality Checks / Check libraries	37s
release / Quality Checks / CodeQL analysis / Analyze (python)	1m 55s
release / Quality Checks / Integration Tests / Integration Tests	14m 5s
release / Release any bumped charm library	30s
release / Release Charm and Libraries / Build the charms	8m 14s
release / Release Charm and Libraries / Build the charms for ARM	8m 16s
release / Release Charm and Libraries / Release arm64 to CharmHub (./grafana-agent_ubuntu-20.04-arm64.charm)	48s
release / Release Charm and Libraries / Release arm64 to CharmHub (./grafana-agent_ubuntu-22.04-arm64.charm)	48s
release / Release Charm and Libraries / Charm List	1s
release / Release Charm and Libraries / Release to CharmHub (./grafana-agent_ubuntu-20.04-amd64.charm)	45s
release / Release Charm and Libraries / Release to CharmHub (./grafana-agent_ubuntu-22.04-amd64.charm)	45s
	38m 27s

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