Bump fast-xml-parser and @azure/core-xml in /build (#295914)

Bumps [fast-xml-parser](https://github.com/NaturalIntelligence/fast-xml-parser) and [@azure/core-xml](https://github.com/Azure/azure-sdk-for-js). These dependencies needed to be updated together.

Updates `fast-xml-parser` from 4.5.0 to 5.3.6
- [Release notes](https://github.com/NaturalIntelligence/fast-xml-parser/releases)
- [Changelog](https://github.com/NaturalIntelligence/fast-xml-parser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/NaturalIntelligence/fast-xml-parser/compare/v4.5.0...v5.3.6)

Updates `@azure/core-xml` from 1.4.4 to 1.5.0
- [Release notes](https://github.com/Azure/azure-sdk-for-js/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-js/blob/main/documentation/Changelog-for-next-generation.md)
- [Commits](https://github.com/Azure/azure-sdk-for-js/compare/@azure/core-xml_1.4.4...@azure/core-xml_1.5.0)

---
updated-dependencies:
- dependency-name: fast-xml-parser
  dependency-version: 5.3.6
  dependency-type: indirect
- dependency-name: "@azure/core-xml"
  dependency-version: 1.5.0
  dependency-type: indirect
...

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