chore(deps): update dependency ubuntu to v22

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ubuntu	github-runner	major	20.04 -> 22.04

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This PR has been generated by Mend Renovate. View repository job log here.

[cakebaker]

It looks like #4186 is still there, though the GNU tests run longer than 20 minutes before they are cancelled.

[cakebaker]

The GNU root tests are cancelled after about 30s.

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/cp/copy-FMR is no longer failing!
Congrats! The gnu test tests/mv/dir2dir is no longer failing!
GNU test failed: tests/dd/direct. tests/dd/direct is passing on 'main'. Maybe you have to rebase?
Skip an intermittent issue tests/rm/rm1