build: Bump certifi from 2021.10.8 to 2022.12.7 in /docs (#98)

Bumps [certifi](https://github.com/certifi/python-certifi) from 2021.10.8 to 2022.12.7.
- [Release notes](https://github.com/certifi/python-certifi/releases)
- [Commits](certifi/python-certifi@2021.10.08...2022.12.07)

---
updated-dependencies:
- dependency-name: certifi
  dependency-type: indirect
...

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/requirements.txt

@@ -4,17 +4,13 @@
 #
 #    pip-compile
 #
---trusted-host pypi.python.org
---trusted-host pypi.org
---trusted-host files.pythonhosted.org
-
 alabaster==0.7.12
     # via sphinx
 babel==2.9.1
     # via sphinx
 beautifulsoup4==4.10.0
     # via furo
-certifi==2021.10.8
+certifi==2022.12.7
     # via requests
 charset-normalizer==2.0.10
     # via requests
@@ -32,8 +28,6 @@ idna==3.3
     # via requests
 imagesize==1.3.0
     # via sphinx
-importlib-metadata==4.10.1
-    # via sphinx
 jinja2==3.0.3
     # via sphinx
 livereload==2.6.3
@@ -101,9 +95,7 @@ urllib3==1.26.8
     # via requests
 wheel==0.37.1
     # via pip-tools
-zipp==3.7.0
-    # via importlib-metadata
-zope.interface==5.4.0
+zope-interface==5.4.0
     # via datetime
 
 # The following packages are considered to be unsafe in a requirements file: