build(deps): bump xml2js and hslayers-ng

Bumps [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js) to 0.6.2 and updates ancestor dependency [hslayers-ng](https://github.com/hslayers/hslayers-ng). These dependencies need to be updated together.


Updates `xml2js` from 0.4.23 to 0.6.2
- [Commits](https://github.com/Leonidas-from-XIV/node-xml2js/commits/0.6.2)

Updates `hslayers-ng` from 8.1.0 to 14.1.0
- [Release notes](https://github.com/hslayers/hslayers-ng/releases)
- [Commits](hslayers/hslayers-ng@8.1.0...14.1.0)

---
updated-dependencies:
- dependency-name: xml2js
  dependency-type: indirect
- dependency-name: hslayers-ng
  dependency-type: direct:production
...

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