Unpin mkdocs-autorefs

Now that all warnings about "Multiple URLs for" were fixed, we can unpin
`mkdocs-autorefs` and let it update to the latest version.

Signed-off-by: Leandro Lucarella <luca-frequenz@llucax.com>

pyproject.toml

@@ -54,7 +54,6 @@ dev-mkdocs = [
   "black == 24.8.0",
   "Markdown==3.7",
   "mike == 2.1.3",
-  "mkdocs-autorefs >= 1.0.1, < 1.1",
   "mkdocs-gen-files == 0.5.0",
   "mkdocs-literate-nav == 0.6.1",
   "mkdocs-macros-plugin == 1.0.5",