Bump maggma from 0.48.0 to 0.49.3

Bumps [maggma](https://github.com/materialsproject/maggma) from 0.48.0 to 0.49.3.
- [Release notes](https://github.com/materialsproject/maggma/releases)
- [Changelog](https://github.com/materialsproject/maggma/blob/main/docs/CHANGELOG.md)
- [Commits](materialsproject/maggma@v0.48.0...v0.49.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements-ci.txt

@@ -7,4 +7,4 @@ flake8
 pylint
 black
 treon==0.1.4
-maggma==0.48.0
+maggma==0.49.3