chore(deps): update canonical/charming-actions action to v2.6.2 #870

Job	Run time
Run Tests / Bundle Integration	20m 28s
Publish Charm / Generate the Charm Matrix	3s
Run Tests / Individual charm's integration tests (controller)	14m 29s
Run Tests / Individual charm's integration tests (ui)	18m 26s
Run Tests / Lint Code (controller)	27s
Run Tests / Lint Code (ui)	22s
Run Tests / Unit Test (controller)	23s
Run Tests / Unit Test (ui)	23s
Run Tests / Check libraries (jupyter-controller) / Lint	9s
Run Tests / Check libraries (jupyter-controller) / Check libraries	22s
Run Tests / Check libraries (jupyter-ui) / Check libraries	21s
Run Tests / Check libraries (jupyter-ui) / Lint	9s
Publish Charm / Publish Charm (./charms/jupyter-controller)	3m 55s
Publish Charm / Publish Charm (./charms/jupyter-ui)	5m 11s
	1h 5m 8s

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