Bump vulture from 1.4 to 1.5

Bumps [vulture](https://github.com/jendrikseipp/vulture) from 1.4 to 1.5.
- [Release notes](https://github.com/jendrikseipp/vulture/releases)
- [Changelog](https://github.com/jendrikseipp/vulture/blob/master/CHANGELOG.md)
- [Commits](jendrikseipp/vulture@v1.4...v1.5)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

dev-requirements.txt

@@ -31,5 +31,5 @@ sphinx_paramlinks==0.4.1
 sphinxcontrib-spelling==5.0.0
 timeout-decorator==0.4.1  # Decorate functions to time out.
 twine==3.1.1
-vulture==1.4
+vulture==1.5
 yapf==0.30.0  # Automatic formatting for Python