Bumping development dependencies.

Author: igorborgest

requirements-dev.txt

@@ -8,15 +8,15 @@ pydocstyle~=5.0.2
 doc8~=0.8.1
 tox~=3.15.2
 pytest~=5.4.3
-pytest-cov~=2.9.0
+pytest-cov~=2.10.0
 pytest-xdist~=1.32.0
-pytest-timeout~=1.3.4
+pytest-timeout~=1.4.1
 scikit-learn~=0.23.1
-cfn-lint~=0.33.0
+cfn-lint~=0.33.1
 cfn-flip~=1.2.3
 twine~=3.1.1
 wheel~=0.34.2
-sphinx~=3.0.4
+sphinx~=3.1.1
 sphinx_bootstrap_theme~=0.7.1
 moto~=1.3.14
 jupyterlab~=2.1.4