Bump xmltodict from 0.12.0 to 0.13.0 (#659)

Bumps [xmltodict](https://github.com/martinblech/xmltodict) from 0.12.0 to 0.13.0.
- [Release notes](https://github.com/martinblech/xmltodict/releases)
- [Changelog](https://github.com/martinblech/xmltodict/blob/master/CHANGELOG.md)
- [Commits](martinblech/xmltodict@v0.12.0...v0.13.0)

---
updated-dependencies:
- dependency-name: xmltodict
  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]

requirements.txt

@@ -9,7 +9,7 @@ githubpy==1.1.0
 requests==2.27.1
 pyIsEmail==1.4.0
 GitPython==3.1.27
-xmltodict==0.12.0
+xmltodict==0.13.0
 lxml==4.8.0
 pytz==2021.3
 tzlocal==4.1