Update v12.3.0 Changelog

[benjisclowder]

Description

Adding changelog for v12.3.0 RC.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[chloeYue]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.15%. Comparing base (439f7d6) to head (b5fab4c).
Report is 36 commits behind head on Version-v12.3.0.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           Version-v12.3.0   #27274      +/-   ##
===================================================
- Coverage            70.24%   70.15%   -0.09%     
===================================================
  Files                 1426     1431       +5     
  Lines                50239    50437     +198     
  Branches             13954    13994      +40     
===================================================
+ Hits                 35289    35381      +92     
- Misses               14950    15056     +106     

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[metamaskbot]

Builds ready [b5fab4c]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6
  • common: 0, 1, 10, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1835 ± 80 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	322	2295	1693	477	229
		domContentLoaded	1599	2163	1801	139	67
		load	1615	2317	1835	166	80
		domInteractive	12	70	41	17	8

[metamaskbot]

No release label on PR. Adding release label release-12.3.0 on PR, as PR was added to branch 12.3.0 when release was cut.