Updated vm image to 20.04

[gavin-aguiar]

Description

Fixes #

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PR information

• [ ] The title of the PR is clear and informative.
• [ ] There are a small number of commits, each of which has an informative message. This means that previously merged commits do not appear in the history of the PR. For information on cleaning up the commits in your pull request, see this page.
• [ ] If applicable, the PR references the bug/issue that it fixes in the description.
• [ ] New Unit tests were added for the changes made and CI is passing.

Quality of Code and Contribution Guidelines

• [ ] I have read the contribution guidelines.

[codecov[bot]]

Codecov Report

Merging #1111 (d0b238f) into v3.x-dev (b7eb013) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##           v3.x-dev    #1111   +/-   ##
=========================================
  Coverage     84.00%   84.00%           
=========================================
  Files            31       31           
  Lines          1625     1625           
  Branches        265      265           
=========================================
  Hits           1365     1365           
  Misses          195      195           
  Partials         65       65           

Flag	Coverage Δ
unittests	84.00% <ø> (ø)

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