Update dependency @ember/string to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@ember/string	3.1.1 → 4.0.1

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Release Notes

emberjs/ember-string (@​ember/string)

v4.0.1

@​ember/string 4.0.1 (patch)

🐛 Bug Fix

• @ember/string
  • #​448 Cleanup htmlSafe and isHTMLSafe stubs (@​mkszepp)

🏠 Internal

• @ember/string
  • #​446 Fix CI icon in README.md (@​SergeAstapov)

Committers: 2

• Markus Sanin (@​mkszepp)
• Sergey Astapov (@​SergeAstapov)

v4.0.0

@​ember/string 4.0.0 (major)

💥 Breaking Change

• @ember/string
  • #​425 (Real™ package™)™ (@​NullVoxPopuli)

🏠 Internal

• @ember/string
  • #​444 Manually tell CI to use pnpm 9 everywhere (@​NullVoxPopuli)
  • #​443 npx create-release-plan-setup@​latest --update (@​NullVoxPopuli)

Committers: 1

• @​NullVoxPopuli

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