release: 0.29.0

[geonnave]

Finalizes the release-candidate versions to their stable releases for the 0.29.0 cut, now that the upstream dependencies have shipped.

• 0.29.0rc3 -> 0.29.0
• marilib-pkg floor >= 0.9.0rc3 -> >= 0.9.0 (mari 0.9.0 released)
• swarmit floor >= 0.8.0rc3 -> >= 0.8.0 (swarmit 0.8.0 released)
• default firmware pin DOTBOT_FIRMWARE_VERSION 1.22.0rc1 -> 1.22.0 (DotBot-firmware 1.22.0 released)

qrkey (0.12.2) and pydotbot-utils (0.3.0) floors are already on stable releases, so they are unchanged.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.27%. Comparing base (f93abc8) to head (6f11e9c).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #274   +/-   ##
========================================
  Coverage    83.27%   83.27%           
========================================
  Files          119      119           
  Lines        11120    11120           
  Branches       571      570    -1     
========================================
  Hits          9260     9260           
  Misses        1857     1857           
  Partials         3        3           

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