build(deps): bump bases from 0.2.1 to 0.3.0

Bumps [bases](https://github.com/hashberg-io/bases) from 0.2.1 to 0.3.0.
- [Release notes](https://github.com/hashberg-io/bases/releases)
- [Commits](https://github.com/hashberg-io/bases/compare/v0.2.1...v0.3.0)

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

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

requirements.txt

@@ -10,7 +10,7 @@ git+https://github.com/snarfed/negotiator.git@py3#egg=negotiator
 git+https://github.com/snarfed/oauth-dropins.git#egg=oauth_dropins
 
 attrs==23.1.0
-bases==0.2.1
+bases==0.3.0
 beautifulsoup4==4.12.2
 bech32==1.2.0
 brevity==0.2.17