Simplify docs' requirement file

Author: ADmad

docs/requirements.txt

@@ -1,19 +1,5 @@
-alabaster==0.7.12
-Babel==2.9.1
-certifi==2023.7.22
-chardet==3.0.4
-docutils==0.14
-idna==2.7
-imagesize==0.7.1
-Jinja2==2.11.3
-MarkupSafe==0.23
-Pygments==2.15.0
-pytz==2018.7
-requests==2.31.0
-six==1.11.0
-snowballstemmer==1.2.1
-Sphinx==1.5.1
-sphinx-rtd-theme==0.1.9
-sphinxcontrib-phpdomain==0.2.1
-urllib3==1.26.18
+Pygments==2.18.0
+Sphinx==7.4.7
+sphinx-rtd-theme==2.0.0
+sphinxcontrib-phpdomain==0.12.0
 cakephp-theme