ci: upgrade to pnpm/action-setup@v4 to avoid CI failures

[frantic1048]

📑 Summary

Upgrade to pnpm/action-setup@v4

The current pnpm/action-setup@v2 would cause the CI to fail.

📏 Design Decisions

See: pnpm/action-setup#135

📋 Tasks

Make sure you

• 📖 have read the contribution guidelines
• 💻 have added necessary unit/e2e tests.
• 📓 have added documentation. Make sure MERMAID_RELEASE_VERSION is used for all new features.
• 🔖 targeted develop branch

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Name	Link
🔨 Latest commit	fde668a
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 5.86%. Comparing base (161506b) to head (fde668a).

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #5621   +/-   ##
=======================================
  Coverage     5.86%   5.86%           
=======================================
  Files          274     274           
  Lines        41085   41085           
  Branches       488     488           
=======================================
  Hits          2408    2408           
  Misses       38677   38677           

Flag	Coverage Δ
unit	5.86% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No changes detected	-	Jul 4, 2024, 7:15 AM

[mermaid-bot]

@frantic1048, Thank you for the contribution!
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[sidharthv96]

Thank you @frantic1048 !