build(deps): bump which from 3.0.1 to 4.0.0 (#67)

Bumps [which](https://github.com/npm/node-which) from 3.0.1 to 4.0.0.
- [Release notes](https://github.com/npm/node-which/releases)
- [Changelog](https://github.com/npm/node-which/blob/main/CHANGELOG.md)
- [Commits](npm/node-which@v3.0.1...v4.0.0)

---
updated-dependencies:
- dependency-name: which
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -37,7 +37,7 @@
   "license": "MIT",
   "dependencies": {
     "cross-spawn": "^7.0.3",
-    "which": "^3.0.0"
+    "which": "^4.0.0"
   },
   "devDependencies": {
     "pre-commit": "git+https://[email protected]/fastify/pre-commit.git",