[Dependencies]: Bump chameleon from 4.5.4 to 4.6.0

Bumps [chameleon](https://github.com/malthe/chameleon) from 4.5.4 to 4.6.0.
- [Release notes](https://github.com/malthe/chameleon/releases)
- [Changelog](https://github.com/malthe/chameleon/blob/master/CHANGES.rst)
- [Commits](malthe/chameleon@4.5.4...4.6.0)

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

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

requirements.txt

@@ -1,2 +1,2 @@
-chameleon==4.5.4
+chameleon==4.6.0
 htmlmin==0.1.12