Update the use of sphinx

Author: chdemko

composer.lock

@@ -23,8 +23,6 @@
 # Doxygen
 subprocess.call('doxygen Doxyfile', shell=True)
 
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
-
 # -- Project information -----------------------------------------------------
 
 project = 'PHP BitArray'
@@ -108,10 +106,9 @@
 # a list of builtin themes.
 #
 #html_theme = 'alabaster'
-if not on_rtd:  # only import and set the theme if we're building docs locally
-    import sphinx_rtd_theme
-    html_theme = 'sphinx_rtd_theme'
-    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+import sphinx_rtd_theme
+html_theme = 'sphinx_rtd_theme'
+html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
 from sphinx.highlighting import lexers
 from pygments.lexers.web import PhpLexer

docs/conf.py

@@ -1,5 +1,5 @@
-Sphinx>=6.0
-sphinx_rtd_theme>=1.2
+Sphinx>=7.2
+sphinx_rtd_theme>=2.0
 sphinxcontrib-phpdomain>=0.11
 breathe>=4.35
 myst-parser>=2.0