drop unmaintained cloud_sptheme to resolve docs related security issu…

…es and support more recent package versions

docs/conf.py

@@ -60,7 +60,6 @@
     "sphinxcontrib.redoc",
     "sphinx.ext.autodoc",
     "sphinx.ext.autosectionlabel",  # help make cross-references to title/sections
-    "cloud_sptheme.ext.autodoc_sections",  # allow sections in docstrings code
     "sphinx.ext.todo",
     "sphinx.ext.viewcode",
     "sphinx.ext.intersphinx",

requirements-doc.txt

@@ -3,8 +3,6 @@
 # we actually need to install all requirements during docs build because of OpenAPI generation
 # (see 'docs/conf.py')
 astroid<2.12    # pin to resolve sphinx-autoapi (see https://github.com/readthedocs/sphinx-autoapi/issues/349)
-cloud_sptheme
-jinja2<3.1.3  # fix sphinx failing, see: https://github.com/sphinx-doc/sphinx/issues/10291
 pycodestyle>=2.6.0,<2.9.0; python_version <= "3.5"  # pyup: ignore
 pycodestyle>=2.6.0,<3; python_version >= "3.6"
 # sphinx-autoapi dropped 3.5 support at 1.3.0
@@ -14,7 +12,7 @@ sphinx-autoapi>=1.7.0; python_version >= "3.6"
 sphinx-paramlinks>=0.4.1,<0.5; python_version < "3"
 sphinx-paramlinks>=0.4.1; python_version >= "3"
 sphinx; python_version < "3"
-sphinx>=3.1,<6; python_version >= "3"
+sphinx>=3.1,<8; python_version >= "3"
 sphinxcontrib-redoc>=1.6.0
 sphinx_autodoc_typehints[type_comments]; python_version < "3.6"
 sphinx_autodoc_typehints[type_comments]>=1.11.0; python_version >= "3.6"