Bump urllib3 from 2.0.4 to 2.0.6 in /requirements

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.0.4 to 2.0.6.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.0.4...2.0.6)

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

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

requirements/docs.txt

@@ -28,7 +28,7 @@ packaging==23.1
     #   pallets-sphinx-themes
     #   sphinx
 pallets-sphinx-themes==2.1.1
-    # via -r requirements/docs.in
+    # via -r docs.in
 pygments==2.15.1
     # via sphinx
 requests==2.31.0
@@ -37,7 +37,7 @@ snowballstemmer==2.2.0
     # via sphinx
 sphinx==7.0.1
     # via
-    #   -r requirements/docs.in
+    #   -r docs.in
     #   pallets-sphinx-themes
     #   sphinxcontrib-log-cabinet
 sphinxcontrib-applehelp==1.0.4
@@ -49,10 +49,10 @@ sphinxcontrib-htmlhelp==2.0.1
 sphinxcontrib-jsmath==1.0.1
     # via sphinx
 sphinxcontrib-log-cabinet==1.0.1
-    # via -r requirements/docs.in
+    # via -r docs.in
 sphinxcontrib-qthelp==1.0.3
     # via sphinx
 sphinxcontrib-serializinghtml==1.1.5
     # via sphinx
-urllib3==2.0.4
+urllib3==2.0.6
     # via requests