chore(release): Release notes for v7.2.1

[SyntaxColoring]

Overview

User-facing app and robot release notes for v7.2.1.

Addresses RTC-405.

Review requests

Coherent, correct, and complete?

Risk assessment

No risk.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 67.56%. Comparing base (f99718c) to head (7c01fd4). Report is 3 commits behind head on chore_release-7.2.1.

Additional details and impacted files

@@                 Coverage Diff                  @@
##           chore_release-7.2.1   #14642   +/-   ##
====================================================
  Coverage                67.56%   67.56%           
====================================================
  Files                     2521     2521           
  Lines                    72251    72251           
  Branches                  9311     9311           
====================================================
  Hits                     48815    48815           
  Misses                   21240    21240           
  Partials                  2196     2196           

Flag	Coverage Δ
app	63.89% <ø> (ø)
g-code-testing	92.43% <ø> (ø)

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