Bump urllib3 from 2.6.2 to 2.6.3

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.6.2 to 2.6.3.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.6.2...2.6.3)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.6.3
  dependency-type: indirect
...

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

Author: dependabot[bot]

requirements.txt

@@ -30,12 +30,12 @@ snowballstemmer==3.0.1
     # via sphinx
 sphinx==9.0.4
     # via
-    #   -r ./requirements.in
+    #   -r requirements.in
     #   sphinx-last-updated-by-git
 sphinx-last-updated-by-git==0.3.8
     # via sphinx-sitemap
 sphinx-sitemap==2.9.0
-    # via -r ./requirements.in
+    # via -r requirements.in
 sphinxcontrib-applehelp==2.0.0
     # via sphinx
 sphinxcontrib-devhelp==2.0.0
@@ -48,5 +48,5 @@ sphinxcontrib-qthelp==2.0.0
     # via sphinx
 sphinxcontrib-serializinghtml==2.0.0
     # via sphinx
-urllib3==2.6.2
+urllib3==2.6.3
     # via requests