Tests

fix: failing upgrades without chain #1502

Job	Run time
Lint	30s
Unit tests	42s
sync-docs / Open PR with docs changes	2m 13s
Build charm \| tests/integration/app-charm / Collect platforms for charm \| tests/integration/app-charm	14s
Build charm \| . / Collect platforms for charm \| .	20s
Build charm \| tests/integration/app-charm / Build charm \| [email protected]:amd64	2m 41s
Build charm \| . / Build charm \| [email protected]:amd64	3m 22s
integration-charm	22m 25s
integration-scaling	13m 58s
integration-provider	27m 28s
integration-password-rotation	10m 51s
integration-tls	44m 30s
integration-upgrade	4m 42s
integration-balancer-single	44m 29s
integration-balancer-multi	32m 25s
integration-kraft-single	20m 28s
integration-kraft-multi	28m 51s
${{ matrix.tox-environments }}	1s
	4h 20m 10s

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