textproc/py-mkdocs-material: Update to 9.5.48

Changelogs since 9.5.45:

https://github.com/squidfunk/mkdocs-material/releases/tag/9.5.48
https://github.com/squidfunk/mkdocs-material/releases/tag/9.5.47
https://github.com/squidfunk/mkdocs-material/releases/tag/9.5.46