fix(deps): bump @sinonjs/fake-timers and @types/sinonjs__fake-timers

Bumps [@sinonjs/fake-timers](https://github.com/sinonjs/fake-timers) and [@types/sinonjs__fake-timers](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/sinonjs__fake-timers). These dependencies needed to be updated together.

Updates `@sinonjs/fake-timers` from 14.0.0 to 15.0.0
- [Release notes](https://github.com/sinonjs/fake-timers/releases)
- [Changelog](https://github.com/sinonjs/fake-timers/blob/main/CHANGELOG.md)
- [Commits](sinonjs/fake-timers@v14.0.0...v15.0.0)

Updates `@types/sinonjs__fake-timers` from 8.1.5 to 15.0.1
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/sinonjs__fake-timers)

---
updated-dependencies:
- dependency-name: "@sinonjs/fake-timers"
  dependency-version: 15.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: "@types/sinonjs__fake-timers"
  dependency-version: 15.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -18,13 +18,13 @@
     "@oclif/test": "4.1.13",
     "@salesforce/dev-config": "4.3.1",
     "@salesforce/ts-sinon": "1.4.31",
-    "@sinonjs/fake-timers": "14.0.0",
+    "@sinonjs/fake-timers": "15.0.0",
     "@types/chai": "5.2.2",
     "@types/jsforce": "1.11.5",
     "@types/mocha": "10.0.10",
     "@types/node": "24.1.0",
     "@types/sinon": "17.0.4",
-    "@types/sinonjs__fake-timers": "8.1.5",
+    "@types/sinonjs__fake-timers": "15.0.1",
     "@typescript-eslint/eslint-plugin": "8.46.2",
     "@typescript-eslint/parser": "^8.46.2",
     "chai": "6.2.0",