Bump pythonbible from 0.14.0 to 0.15.4

Bumps [pythonbible](https://github.com/avendesora/pythonbible) from 0.14.0 to 0.15.4.
- [Release notes](https://github.com/avendesora/pythonbible/releases)
- [Changelog](https://github.com/avendesora/pythonbible/blob/main/CHANGELOG.md)
- [Commits](avendesora/pythonbible@v0.14.0...v0.15.4)

---
updated-dependencies:
- dependency-name: pythonbible
  dependency-version: 0.15.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,2 +1,2 @@
 defusedxml==0.7.1
-pythonbible==0.14.0
+pythonbible==0.15.4