Bump black from 23.7.0 to 23.9.1

Bumps [black](https://github.com/psf/black) from 23.7.0 to 23.9.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@23.7.0...23.9.1)

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

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

requirements.in

@@ -1,6 +1,6 @@
 aiohttp==3.8.5
 beautifulsoup4==4.12.2
-black==23.7.0
+black==23.9.1
 deepl==1.15.0
 file-read-backwards==3.0.0
 humanize==4.8.0

requirements.txt

@@ -21,16 +21,14 @@ beautifulsoup4==4.12.2
     # via
     #   -r requirements.in
     #   wikipedia
-black==23.7.0
+black==23.9.1
     # via -r requirements.in
 build==1.0.3
     # via pip-tools
 certifi==2023.7.22
     # via
     #   requests
     #   selenium
-cffi==1.15.1
-    # via trio
 charset-normalizer==3.2.0
     # via
     #   aiohttp
@@ -39,10 +37,6 @@ click==8.1.7
     # via
     #   black
     #   pip-tools
-colorama==0.4.6
-    # via
-    #   build
-    #   click
 deepl==1.15.0
     # via -r requirements.in
 exceptiongroup==1.1.3
@@ -88,8 +82,6 @@ pubchempy==1.0.4
     # via -r requirements.in
 py-cord==2.4.1
     # via -r requirements.in
-pycparser==2.21
-    # via cffi
 pyproject-hooks==1.0.0
     # via build
 pysocks==1.7.1