Update all non-major dependencies (#254)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

requirements/docs.txt

@@ -1,3 +1,3 @@
-sphinx==4.0.2
+sphinx==4.0.3
 sphinx-autobuild==2021.3.14
 sphinx-rtd-theme==0.5.2

requirements/lint.txt

@@ -8,8 +8,8 @@ flake8-executable==2.1.1
 mccabe==0.6.1
 mypy==0.902
 rstcheck==3.3.1
-Sphinx==4.0.2  # used for rstcheck to enable Sphinx support
+Sphinx==4.0.3  # used for rstcheck to enable Sphinx support
 yamllint==1.26.1
 # Types package for mypy
-types-PyYAML==5.4.2
-types-requests==0.1.11
+types-PyYAML==5.4.3
+types-requests==0.1.13