chore(deps-dev): bump sinon-chai and @types/sinon-chai

Bumps [sinon-chai](https://github.com/chaijs/sinon-chai) and [@types/sinon-chai](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/sinon-chai). These dependencies needed to be updated together.

Updates `sinon-chai` from 3.7.0 to 4.0.0
- [Release notes](https://github.com/chaijs/sinon-chai/releases)
- [Changelog](https://github.com/chaijs/sinon-chai/blob/master/CHANGELOG.md)
- [Commits](chaijs/sinon-chai@3.7.0...4.0.0)

Updates `@types/sinon-chai` from 3.2.12 to 4.0.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/sinon-chai)

---
updated-dependencies:
- dependency-name: sinon-chai
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: "@types/sinon-chai"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -176,7 +176,7 @@
     "@types/mocha": "^10.0.9",
     "@types/node": "22.x",
     "@types/sinon": "^17.0.3",
-    "@types/sinon-chai": "^3.2.12",
+    "@types/sinon-chai": "^4.0.0",
     "@types/vscode": "1.87.0",
     "@vscode/test-cli": "^0.0.10",
     "@vscode/test-electron": "^2.4.1",
@@ -191,7 +191,7 @@
     "mocha": "^10.8.2",
     "prettier": "^3.3.3",
     "sinon": "^19.0.2",
-    "sinon-chai": "^3.7.0",
+    "sinon-chai": "^4.0.0",
     "tar": "^7.4.3",
     "typescript": "^5.6.3",
     "typescript-eslint": "^8.15.0",