Bump urllib3 from 1.26.3 to 1.26.5 in /docs (#168)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.3 to 1.26.5.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.3...1.26.5)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: indirect
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -156,9 +156,9 @@ sphinxcontrib-serializinghtml==1.1.4 \
     --hash=sha256:eaa0eccc86e982a9b939b2b82d12cc5d013385ba5eadcc7e4fed23f4405f77bc \
     --hash=sha256:f242a81d423f59617a8e5cf16f5d4d74e28ee9a66f9e5b637a18082991db5a9a
     # via sphinx
-urllib3==1.26.3 \
-    --hash=sha256:1b465e494e3e0d8939b50680403e3aedaa2bc434b7d5af64dfd3c958d7f5ae80 \
-    --hash=sha256:de3eedaad74a2683334e282005cd8d7f22f4d55fa690a2a1020a416cb0a47e73
+urllib3==1.26.5 \
+    --hash=sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c \
+    --hash=sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098
     # via requests
 wheel==0.38.1 \
     --hash=sha256:7a95f9a8dc0924ef318bd55b616112c70903192f524d120acc614f59547a9e1f \