Update dependency ubuntu to v22

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ubuntu	github-runner	major	18.04 -> 22.04

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

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

[codecov-commenter]

Codecov Report

Merging #108 (c3e95cf) into master (6654125) will not change coverage.
Report is 4 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #108   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           13        13           
  Lines          200       200           
=========================================
  Hits           200       200           

Flag	Coverage Δ
unittests	100.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.