Move `filename` from label to structured_metadata (#180) #111

Job	Run time
release / Quality Checks / Check the CHARMHUB_TOKEN secret	1s
release / Quality Checks / Static Analysis / Static Analysis of Charm	18s
release / Quality Checks / Scenario Tests / Scenario tests	24s
release / Quality Checks / Linting / Lint	9s
release / Quality Checks / Inclusive naming / check	6s
release / Quality Checks / Static Analysis / Static Analysis of Libs	19s
release / Quality Checks / Unit Tests / Unit tests	20s
release / Quality Checks / Check libraries	31s
release / Quality Checks / CodeQL analysis / Analyze (python)	1m 48s
release / Quality Checks / Integration Tests / Integration Tests	42m 23s
release / Release any bumped charm library	29s
release / Release Charm and Libraries / Build the charms for ARM	46m 15s
release / Release Charm and Libraries / Build the charms	37m 45s
release / Release Charm and Libraries / Release to CharmHub (grafana-agent_ubuntu-20.04-amd64.charm)	41s
release / Release Charm and Libraries / Release to CharmHub (grafana-agent_ubuntu-22.04-amd64.charm)	37s
release / Release Charm and Libraries / Charm List	1s
release / Release Charm and Libraries / Release arm64 to CharmHub (grafana-agent_ubuntu-20.04-arm64.charm)	55s
release / Release Charm and Libraries / Release arm64 to CharmHub (grafana-agent_ubuntu-22.04-arm64.charm)	45s
	2h 13m 47s

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