Bump puremagic from 1.28 to 1.29 (#111)

Bumps [puremagic](https://github.com/cdgriffith/puremagic) from 1.28 to 1.29.
- [Release notes](https://github.com/cdgriffith/puremagic/releases)
- [Changelog](https://github.com/cdgriffith/puremagic/blob/master/CHANGELOG.md)
- [Commits](cdgriffith/puremagic@1.28...1.29)

---
updated-dependencies:
- dependency-name: puremagic
  dependency-version: '1.29'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,3 +1,3 @@
-puremagic==1.28
+puremagic==1.29
 pygraphviz==1.14
 svg.path==6.3