chore: bump gitpython from 3.1.58 to 3.1.59 in /docs

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.58 to 3.1.59.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.58...3.1.59)

---
updated-dependencies:
- dependency-name: gitpython
  dependency-version: 3.1.59
  dependency-type: indirect
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -22,9 +22,9 @@ gitdb==4.0.12 \
     --hash=sha256:5ef71f855d191a3326fcfbc0d5da835f26b13fbcba60c32c21091c349ffdb571 \
     --hash=sha256:67073e15955400952c6565cc3e707c554a4eea2e428946f7a4c162fab9bd9bcf
     # via gitpython
-gitpython==3.1.58 \
-    --hash=sha256:621416df10ef3fd0e19fabf9172ddeed0fa704d353d04f194eec56a625a95b22 \
-    --hash=sha256:d331e722577f0fd7fc1f857419b3ecc07af66282b933d2a4d95f84a042fdd50f
+gitpython==3.1.59 \
+    --hash=sha256:0a1475cfdc38a5bfba1a3e9a4a9da52a39749ecec322b772915c019f94e5b7e4 \
+    --hash=sha256:67a82f537384578643624c8b2c531938a9b82be431663e575dcf638526631d4c
     # via mkdocs-git-revision-date-plugin
 hjson==3.1.0 \
     --hash=sha256:55af475a27cf83a7969c808399d7bccdec8fb836a07ddbd574587593b9cdcf75 \