chore(deps): update dependency sinon to v21

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
sinon (source)	^20.0.0 → ^21.0.2

---

Release Notes

sinonjs/sinon (sinon)

v21.0.2

Compare Source

• 024321c4
  fix: skip Node specific tests in browser env (Carl-Erik Kopseng)
• b836fccb
  fix: js-yaml breaking change from v3 to v4 (Carl-Erik Kopseng)
• ebf0c431
  docs: add how-to article for stubbing ES module imports (#​1832) (#​2676) (Eduard Barrera)

  • docs: add how-to article for stubbing ES module imports with esm package

  Adds a comprehensive How-To guide that addresses issue #​1832, documenting
  how to configure Node.js to allow Sinon stubs to work with ES modules.

  • Explains why ES module namespace bindings are immutable by spec
  • Shows how to use the 'esm' npm package with mutableNamespace: true
  • Provides a complete working example with project layout, package.json,
    loader file, source modules, and a full test suite
  • Documents limitations (destructured imports, non-standard behavior)
  • Replaces the TODO comment in link-seams-commonjs.md with a cross-reference

  Closes #​1832
  Co-authored-by: Eduard Barrera eduardbar@users.noreply.github.com
  Co-authored-by: Carl-Erik Kopseng carlerik@gmail.com

• ebcd506c
  Fix spies not being reset properly (#​2673) (simon-id)
• 3beab2ba
  Make doc tests pass with new jQuery (Carl-Erik Kopseng)
• 766715c6
  build: reduce transitive audit findings (Carl-Erik Kopseng)
• 92aaf5c9
  build: upgrade eslint config and replace dependency-check (Carl-Erik Kopseng)
• c6aaa871
  chore: ignore project worktrees (Carl-Erik Kopseng)
• ef387e8e
  Upgrade most deps (Carl-Erik Kopseng)
• 3cf4e77d
  docs: improve writing of documentation (#​2675) (Eduardo de la Cruz Palacios)
• 6349032f
  Check login status before publishing steps are performed (Carl-Erik Kopseng)

Released by Carl-Erik Kopseng on 2026-03-04.

v21.0.1

Compare Source

• 456a65c2
  Update dependencies - except @​sinonjs/samsam (#​2669) (Carl-Erik Kopseng)
• f04f3eb1
  Fix issue 2618 - Remove browserify in favor of esbuild (#​2661) (Artur Parkhisenko)
• 48b69df2
  fix(docs): remove assert.failException from documentation (#​2666) (Steffen Schroeder)
• 13b27ccc
  Fix sandbox restore not handling stubbed functions (#​2667) (thamion)
• ae9e09ac
  Update compatibility target to ES2023 (Carl-Erik Kopseng)

  Updated compatibility target from ES2017 to ES2023 and clarified the note on breaking changes.

• 26055043
  Improve error message for immutable descriptors (#​2664) (Stuart Dotson)
• 80fa9a5b
  Also mirror the calledOnceWith assertion (#​2660) (Benedikt Meurer)

Released by Carl-Erik Kopseng on 2025-12-19.

v21.0.0

Compare Source

• fd10f13f
  chore!: remove assert.failException property (#​2659) (Morgan Roderick)

  This was used for allowing customisation of the thrown error between
  sandboxes and for customisation for integrations (most likely from the
  days of BusterJS).

  To my knowledge and what I've been able to find on GitHub, this has
  never had any production use by end users.

  BREAKING CHANGE: this removes assert.failException from the API

Released by Morgan Roderick on 2025-06-13.

---

Configuration

📅 Schedule: Branch creation - Between 12:00 AM and 03:59 AM ( * 0-3 * * * ) (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.