Bump esbuild from 0.15.5 to 0.15.6

Bumps [esbuild](https://github.com/evanw/esbuild) from 0.15.5 to 0.15.6.
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/master/CHANGELOG.md)
- [Commits](evanw/esbuild@v0.15.5...v0.15.6)

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

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