feat(ci): run intensive CI steps in parallel

[hainenber]

feat(ci): run intensive CI steps in parallel

SUMMARY

Utilize newest GHA feature to allow CI steps to be ran in parallel. This is different from matrix which would spawn additional runners for each job while this one runs stuffs within 1 runner to be parallel.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A

TESTING INSTRUCTIONS

Green CI for acceptance criterion

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.48%. Comparing base (8299e7f) to head (9de2728).
⚠️ Report is 23 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #42200      +/-   ##
==========================================
- Coverage   65.08%   64.48%   -0.60%     
==========================================
  Files        2758     2758              
  Lines      155229   155229              
  Branches    35572    35572              
==========================================
- Hits       101026   100102     -924     
- Misses      52288    53212     +924     
  Partials     1915     1915              

Flag	Coverage Δ
hive	38.94% <ø> (ø)
javascript	70.77% <ø> (-0.01%)	⬇️
mysql	57.62% <ø> (ø)
postgres	57.68% <ø> (ø)
presto	40.90% <ø> (ø)
python	57.89% <ø> (-1.22%)	⬇️
sqlite	57.29% <ø> (ø)
unit	?

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[hainenber]

Welp, 2 things:

• Find a way to run pytest in parallel with proper data isolation.
• action-validator can accept steps.parallel syntax

Until then, the PR needs to be in draft mode