Update to Muon 5.0.6 (which has tab discarding fixes!)

[bsclifton]

Fixes #12429

Auditors: @bridiver, @petemill

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed. (Ask a Brave employee to help if you cannot access this document.)

Test Plan:

See #12429

Reviewer Checklist:

• Request a security/privacy review as needed if one was not already requested.

Tests

• Adequate test coverage exists to prevent regressions
• Tests should be independent and work correctly when run individually or as a suite ref
• New files have MPL2 license header

[bsclifton]

The required follow up (after this) for tab discarding would be #13120

[bridiver]

++

[codecov-io]

Codecov Report

Merging #13282 into master will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #13282      +/-   ##
==========================================
- Coverage   56.09%   56.06%   -0.04%     
==========================================
  Files         282      282              
  Lines       28061    28061              
  Branches     4608     4608              
==========================================
- Hits        15741    15732       -9     
- Misses      12320    12329       +9

Flag	Coverage Δ
#unittest	56.06% <ø> (-0.04%)	⬇️

Impacted Files	Coverage Δ
js/stores/appStoreRenderer.js	91.66% <0%> (-8.34%)	⬇️
app/renderer/components/reduxComponent.js	57.75% <0%> (-3.45%)	⬇️
js/stores/windowStore.js	27.65% <0%> (-0.3%)	⬇️

[bsclifton]

master 437b8a0
0.22.x 67e511d
0.21.x f30cd05