build(deps): bump remarshal from 2.0.1 to 2.1.0 in /xml (#444)

Bumps [remarshal](https://github.com/remarshal-project/remarshal) from 2.0.1 to 2.1.0.
- [Release notes](https://github.com/remarshal-project/remarshal/releases)
- [Commits](remarshal-project/remarshal@v2.0.1...v2.1.0)

---
updated-dependencies:
- dependency-name: remarshal
  dependency-version: 2.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

xml/requirements.txt

@@ -1,3 +1,3 @@
 jsonfmt==0.2.7
-remarshal==2.0.1
+remarshal==2.1.0
 tcx2gpx==0.1.6