chore(cherry-pick): additional CI changes for 0.66 release

[andrewb1269]

CI-Related Scripts Approved on Sep 25 2025:

• ci: Update ref to use the correct tag instead of latest on main, e199f7bede0e8236478304e6fe41de59f3fa1dfb
• ci: update MATS to parallel runs, 1a5b9474e13e802d9b4b86a9dba857e8f6ff4513

Performance-Related Scripts Approved on Sep 25 2025:

• test: fix of 21164 (to use abs diff value instead of rounded percentage), d28b84a2038679e1d1c356d309654f7245adbf98

Related issue(s):

Fixes #21243

[lfdt-bot]

🎉 Snyk checks have passed. No issues have been found so far.

✅ security/snyk check is complete. No issues have been found. (View Details)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@               Coverage Diff               @@
##             release/0.66   #21245   +/-   ##
===============================================
  Coverage           71.44%   71.44%           
  Complexity          24395    24395           
===============================================
  Files                2665     2665           
  Lines              103277   103277           
  Branches            10767    10767           
===============================================
  Hits                73790    73790           
  Misses              25470    25470           
  Partials             4017     4017           

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[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (da2285a)	103182	77761	75.36%
Head commit (dd3d12b)	103182 (+0)	77761 (+0)	75.36% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#21245)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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