Update requirements files

Author: stevepiercy

requirements-initial.txt

@@ -1,4 +1,5 @@
+# requirements-initial.txt
 # From https://dist.plone.org/release/6-latest/constraints.txt
-pip==23.2
-setuptools==68.0.0
-wheel==0.40.0
+pip==24.0
+setuptools==69.5.1
+wheel==0.43.0

requirements.txt

@@ -1,26 +1,17 @@
-docutils<0.17,>=0.15  # sphinx-book-theme 0.2.0 has requirement docutils<0.17,>=0.15
-Sphinx<5,>=3  # sphinx-book-theme 0.3.3 has requirement sphinx<5,>=3
+# requirements.txt
 graphviz
-lesscpy
 linkify-it-py
 myst-parser
-pydata-sphinx-theme<=0.8.99  # Build fails in 0.9.0. See https://github.com/plone/documentation/issues/1297
+plone-sphinx-theme
 sphinx-autobuild
-sphinx-book-theme==0.3.3  # Temporary pin until we can sort out HTML refactoring.
 sphinx-copybutton
 sphinx-design  # Documentation only
 sphinx-examples
 sphinx-notfound-page  # Documentation only
 sphinx-reredirects
 sphinx-sitemap
-sphinx-togglebutton
 sphinxcontrib.httpdomain  # plone.restapi
 sphinxcontrib.httpexample  # plone.restapi
-sphinxcontrib-applehelp==1.0.4  # https://github.com/plone/documentation/issues/1604
-sphinxcontrib-devhelp==1.0.2  # https://github.com/plone/documentation/issues/1604
-sphinxcontrib-htmlhelp==2.0.1  # https://github.com/plone/documentation/issues/1604
-sphinxcontrib-qthelp==1.0.3  # https://github.com/plone/documentation/issues/1604
-sphinxcontrib-serializinghtml==1.1.5  # https://github.com/plone/documentation/issues/1604
 sphinxcontrib-video
 sphinxext-opengraph
 vale==2.30.0