Merge pull request #143 from Guts/dependabot/pip/pip-licenses-gte-3.5…

…-and-lt-4.1

Update pip-licenses requirement from <3.6,>=3.5 to >=3.5,<4.1

requirements/documentation.txt

@@ -2,7 +2,7 @@
 # -------------
 
 myst-parser[linkify]>=0.14,<0.19
-pip-licenses>=3.5,<3.6
+pip-licenses>=3.5,<4.1
 sphinx-autobuild==2021.3.14
 sphinx-autodoc-typehints<1.20
 sphinx-book-theme<1