Fix Pydantic warnings. (#388) #69

Job	Run time
release / Quality Checks / Check the CHARMHUB_TOKEN secret	1s
release / Quality Checks / Static Analysis / Static Analysis of Charm	20s
release / Quality Checks / Scenario Tests / Scenario tests	1m 1s
release / Quality Checks / Linting / Lint	14s
release / Quality Checks / Inclusive naming / check	14s
release / Quality Checks / Static Analysis / Static Analysis of Libs	25s
release / Quality Checks / Unit Tests / Unit tests	29s
release / Quality Checks / Check libraries	28s
release / Quality Checks / CodeQL analysis / Analyze (python)	2m 4s
release / Quality Checks / Integration Tests / Integration Tests	31m 3s
release / Release any bumped charm library	43s
release / Release Charm and Libraries / Build the charms	3m 6s
release / Release Charm and Libraries / Build the charms for ARM	0s
release / Release Charm and Libraries / Release arm64 to CharmHub	0s
release / Release Charm and Libraries / Release to CharmHub (traefik-k8s_ubuntu-20.04-amd64.charm)	13m 20s
release / Release Charm and Libraries / Charm List	0s
	53m 28s

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