Bump pypdf from 6.4.0 to 6.6.0

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 6.4.0 to 6.6.0.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](py-pdf/pypdf@6.4.0...6.6.0)

---
updated-dependencies:
- dependency-name: pypdf
  dependency-version: 6.6.0
  dependency-type: indirect
...

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

Author: dependabot[bot]

requirements.txt

@@ -19,7 +19,7 @@ certifi==2025.11.12
     # via requests
 charset-normalizer==3.4.4
     # via requests
-click==8.3.1
+click==8.1.8
     # via mkdocs
 colorama==0.4.6
     # via mkdocs-material
@@ -33,6 +33,11 @@ hjson==3.1.0
     #   super-collections
 idna==3.11
     # via requests
+importlib-metadata==8.7.1
+    # via
+    #   markdown
+    #   mkdocs
+    #   mkdocs-get-deps
 jinja2==3.1.6
     # via
     #   -r requirements.in
@@ -43,7 +48,7 @@ libsass==0.23.0
     # via mkdocs-exporter
 lxml==6.0.2
     # via mkdocs-exporter
-markdown==3.10
+markdown==3.9
     # via
     #   mkdocs
     #   mkdocs-htmlproofer-plugin
@@ -100,7 +105,7 @@ pathspec==0.12.1
     # via
     #   mkdocs
     #   mkdocs-macros-plugin
-platformdirs==4.5.0
+platformdirs==4.4.0
     # via mkdocs-get-deps
 playwright==1.56.0
     # via mkdocs-exporter
@@ -110,7 +115,7 @@ pygments==2.19.2
     # via mkdocs-material
 pymdown-extensions==10.17.2
     # via mkdocs-material
-pypdf==6.4.0
+pypdf==6.6.0
     # via mkdocs-exporter
 python-dateutil==2.9.0.post0
     # via
@@ -138,15 +143,18 @@ soupsieve==2.8
     # via beautifulsoup4
 super-collections==0.6.2
     # via mkdocs-macros-plugin
-termcolor==3.2.0
+termcolor==3.1.0
     # via mkdocs-macros-plugin
 typing-extensions==4.15.0
     # via
     #   beautifulsoup4
     #   pyee
+    #   pypdf
 urllib3==2.5.0
     # via requests
 watchdog==6.0.0
     # via mkdocs
 wcmatch==10.1
     # via mkdocs-include-markdown-plugin
+zipp==3.23.0
+    # via importlib-metadata