Bump blacken-docs from 1.15.0 to 1.16.0

Bumps [blacken-docs](https://github.com/asottile/blacken-docs) from 1.15.0 to 1.16.0.
- [Changelog](https://github.com/adamchainz/blacken-docs/blob/main/CHANGELOG.rst)
- [Commits](adamchainz/blacken-docs@1.15.0...1.16.0)

---
updated-dependencies:
- dependency-name: blacken-docs
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

poetry.lock

@@ -34,7 +34,7 @@ yarl = ">=1.6.0"
 [tool.poetry.dev-dependencies]
 aresponses = "^2.1.6"
 black = "^22.12"
-blacken-docs = "^1.15.0"
+blacken-docs = "^1.16.0"
 coverage = {version = "^7.3", extras = ["toml"]}
 flake8 = "^4.0.1"
 flake8-docstrings = "^1.7.0"