Bump esbuild from 0.20.2 to 0.21.2

Bumps [esbuild](https://github.com/evanw/esbuild) from 0.20.2 to 0.21.2.
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG.md)
- [Commits](evanw/esbuild@v0.20.2...v0.21.2)

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

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

package.json

@@ -42,7 +42,7 @@
     "babel-loader": "^9.1.3",
     "clean-jsdoc-theme": "^4.2.18",
     "core-js": "^3.36.1",
-    "esbuild": "^0.20.2",
+    "esbuild": "^0.21.2",
     "eslint": "^8.57.0",
     "eslint-config-standard": "^17.1.0",
     "eslint-plugin-import": "^2.29.1",