chore(deps-dev): bump sinon and @types/sinon in /apps/backend

[dependabot]

Bumps sinon and @types/sinon. These dependencies needed to be updated together.
Updates sinon from 17.0.1 to 21.1.2

Changelog

Sourced from sinon's changelog.

21.1.2

• 53817f7d Upgrade to ESLint 10 and new shared config (#2696) (Carl-Erik Kopseng)

  • Upgrade to ESLint 10 and new shared config
  • Update deps

• d7a682e0 fix: move npm-run-all to devDeps (#2694) (Avi Vahl)

  used only during dev, and caused a considerable dep count jump downstream

• 5b8720ec use latest shared eslint-config (Carl-Erik Kopseng)

Released by Carl-Erik Kopseng on 2026-04-11.

21.1.1

• 3c8b023b Update deps (Carl-Erik Kopseng)
• 2eabf5da fix(#2692): Remove ESM-only supports-color as it breaks CJS exports (#2693) (Carl-Erik Kopseng)

  • fix(#2692): Remove ESM-only supports-color as it breaks CJS exports

Released by Carl-Erik Kopseng on 2026-04-10.

21.1.0

• 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

... (truncated)

Commits

• c9ee063 21.1.2
• 53817f7 Upgrade to ESLint 10 and new shared config (#2696)
• d7a682e fix: move npm-run-all to devDeps (#2694)
• 5b8720e use latest shared eslint-config
• 40f9d6b 21.1.1
• 3c8b023 Update deps
• 2eabf5d fix(#2692): Remove ESM-only supports-color as it breaks CJS exports (#2693)
• 30cf67e 21.1.0
• 0a5526c updated deps
• 5262204 fix: build artifacts before running bundled tests
• Additional commits viewable in compare view

Updates @types/sinon from 9.0.11 to 21.0.1

Commits

• See full diff in compare view

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[yoganandaness]

@copilot make sure all the checks passes. Analyse the failed checks and fix them

[Copilot]

@copilot make sure all the checks passes. Analyse the failed checks and fix them

Fixed in ed47573: the root build now runs backend and frontend sequentially to prevent the validation npm ci race (ENOTEMPTY) that was failing the build check. The new workflow runs for this commit are currently in action_required, so once they’re approved/re-run, checks should proceed with this fix.