build(deps-dev): Bump esbuild from 0.20.2 to 0.21.5

Bumps [esbuild](https://github.com/evanw/esbuild) from 0.20.2 to 0.21.5.
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG.md)
- [Commits](evanw/esbuild@v0.20.2...v0.21.5)

---
updated-dependencies:
- dependency-name: esbuild
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -232,7 +232,7 @@
     "chai": "^4.3.10",
     "chai-as-promised": "^7.1.2",
     "depcheck": "^1.4.6",
-    "esbuild": "^0.20.2",
+    "esbuild": "^0.21.5",
     "eslint": "^8.57.0",
     "glob": "^10.4.1",
     "mocha": "^10.4.0",