build(deps): combine docs dependency updates (#4390)

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

docs/requirements.txt

@@ -1,10 +1,10 @@
-click==8.5.0
+click==8.5.1
 colorama==0.4.6
-deepmerge==3.0.1
+deepmerge==4.0.0
 ghp-import==2.1.0
 griffe==2.4.1
 Jinja2==3.1.6
-Markdown==3.11.2
+Markdown==3.11.3
 MarkupSafe==3.0.4
 mergedeep==1.3.4
 mkdocs==1.6.1
@@ -14,12 +14,12 @@ mkdocstrings==1.0.8
 mkdocstrings-python==2.0.10
 packaging==26.3
 pathspec==1.1.1
-platformdirs==4.14.2
+platformdirs==4.14.5
 Pygments==2.21.0
 pymdown-extensions==12.3
-python-dateutil==3.0.0
+python-dateutil==4.0.0
 PyYAML==6.0.3
 pyyaml_env_tag==1.1
 six==1.17.0
-watchdog==6.0.0
-zensical==0.0.74
+watchdog==7.1.0
+zensical==0.1.0