Drop usage of ubuntu-20.04

[irtazaakram]

• related to Drop usage of ubuntu-20.04 public-engineering#313

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.98%. Comparing base (fa823c6) to head (586021a).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #562   +/-   ##
=======================================
  Coverage   73.98%   73.98%           
=======================================
  Files          27       27           
  Lines        1534     1534           
=======================================
  Hits         1135     1135           
  Misses        399      399           

Flag	Coverage Δ
unittests	73.98% <ø> (ø)

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