Update documentation requirements

Author: domdfcoding

doc-source/requirements.txt

@@ -1,18 +1,14 @@
-default-values>=0.5.0
-extras-require>=0.2.0
+default-values>=0.6.0
+extras-require>=0.5.0
 furo>=2020.11.19b18
-html-section>=0.1.0
-seed-intersphinx-mapping>=0.3.1
-sphinx>=3.0.3
-sphinx-copybutton>=0.2.12
-sphinx-debuginfo>=0.1.0
-sphinx-favicon>=0.2
-sphinx-licenseinfo>=0.1.1
-sphinx-notfound-page>=0.7.1
-sphinx-prompt>=1.1.0
+html-section>=0.3.0
+seed-intersphinx-mapping>=1.2.2
+sphinx-copybutton>=0.5.2
+sphinx-debuginfo>=0.2.2
+sphinx-favicon>=1.0.1
+sphinx-licenseinfo>=0.3.1
+sphinx-notfound-page>=0.8.3
 sphinx-pyproject>=0.1.0
-sphinx-tabs>=1.1.13
-sphinx-toolbox>=3.0.0a4
-sphinxcontrib-httpdomain>=1.7.0
-sphinxemoji>=0.1.6
-toctree-plus>=0.5.0
+sphinx-toolbox>=3.5.0
+sphinxemoji>=0.2.0
+toctree-plus>=0.6.1