Merge pull request #55 from florisvb/dependabot/pip/docs/pygments-2.15.0

Bump pygments from 2.9.0 to 2.15.0 in /docs

Author: florisvb

docs/requirements.txt

@@ -53,7 +53,7 @@ prompt-toolkit==3.0.19
 ptyprocess==0.7.0
 py==1.10.0
 pycparser==2.20
-Pygments==2.9.0
+Pygments==2.15.0
 pylint==2.9.3
 pyparsing==2.4.7
 pyrsistent==0.18.0