chore(deps): update dependency ubuntu to v22 #682

Job	Run time
Run Tests / Unit Test (controller)	16s
Run Tests / Unit Test (ui)	23s
Run Tests / Bundle Integration	6m 32s
Run Tests / Individual charm's integration tests (controller)	5m 51s
Run Tests / Individual charm's integration tests (ui)	6m 8s
Run Tests / Lint Code (controller)	20s
Run Tests / Lint Code (ui)	19s
Publish Charm / Generate the Charm Matrix	5s
Run Tests / Check libraries (jupyter-controller) / Check libraries	23s
Run Tests / Check libraries (jupyter-controller) / Lint	10s
Run Tests / Check libraries (jupyter-ui) / Check libraries	23s
Run Tests / Check libraries (jupyter-ui) / Lint	14s
Publish Charm / Publish Charm (./charms/jupyter-ui)	27s
Publish Charm / Publish Charm (./charms/jupyter-controller)	23s
	21m 54s

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