Update dependency sinon to v21.1.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
sinon (source)	21.0.2 → 21.1.0

---

Release Notes

sinonjs/sinon (sinon)

v21.1.0

Compare Source

• 0a5526c5
  updated deps (Carl-Erik Kopseng)
• 5262204f
  fix: build artifacts before running bundled tests (Carl-Erik Kopseng)
• 819bb64b
  Migration to ECMAScript modules (ESM) (#​2683) (Carl-Erik Kopseng)

  This allowed us to finally consume ESM-only dependencies and has broken us free from some CJS shackes. Now produce the same API surface for CJS consumers, as well, by generating ./lib

  • Modern ignores 😁
  • test: add distribution harness
  • test: verify packed cjs and esm entrypoints
  • test: lock distribution api manifest
  • test: smoke test built pkg artifacts
  • docs: require contract tests for package migration
  • test: guard esm migration regressions
  • docs: require contract gate for esm migration
  • build: generate cjs lib from esm source entries
  • refactor: port root api surface to esm
  • build: clean port of root api to esm
  • docs: include implementation plans
  • fix: align lint and smoke tests with esm migration
  • refactor: complete esm port of all core components
  • refactor: finalize esm migration with sandbox and naming fixes
  • fix: finish esm migration stabilization
  • chore: stop tracking generated lib output
  • remove plans
  • prettier
  • linting
  • fix: make distribution tests self-contained
  • fix: build before coverage test bundle
  • refactor: move simple unit tests to src
  • refactor: flatten test and coverage script chains
  • refactor: use parallel mocha for node tests
  • test: restore fake timers cleanup
  • refactor: remove node test runner script
  • remove unneccessary clutter
  • fix: make mocha watch use polling
  • simplify
  • Increase coverage
  • Fix coverage by removing duplicated tests

  These were covering the generated lib/ folder.

  • Move shared util into esm dir
  • fix package dep issues
  • Adjust coverage
  • Upgrade all dependencies

  npx npm-check-updates -u

• cd2bf5a3
  Use newer endpoint (Carl-Erik Kopseng)

Released by Carl-Erik Kopseng on 2026-04-09.

v21.0.3

Compare Source

• 0494251b
  fix(#​2678): upgrade samsam to fix buffer comparisons (Carl-Erik Kopseng)

Released by Carl-Erik Kopseng on 2026-03-16.

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• 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.