fix: Install pip and pip-tools in upgrade script

[Jawayria]

Updated the upgrade target script to check the compatibility of upgraded pip and pip-tools versions.
For reference, look at this PR for new check added in edx-repo-health.
JIRA: https://2u-internal.atlassian.net/browse/BOM-3423

[codecov]

Codecov Report

Merging #1858 (8c9ad6c) into master (e351cd1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1858   +/-   ##
=======================================
  Coverage   94.95%   94.95%           
=======================================
  Files         153      153           
  Lines       17014    17014           
  Branches     1875     1875           
=======================================
  Hits        16155    16155           
  Misses        643      643           
  Partials      216      216           

Flag	Coverage Δ
unittests	94.95% <ø> (ø)

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