Bumping dev dependencies

Author: igorborgest

requirements-dev.txt

@@ -1,5 +1,5 @@
 black~=19.3b0
-pylint~=2.4.4
+pylint~=2.5.0
 flake8~=3.7.9
 mypy~=0.770
 isort~=4.3.21
@@ -11,11 +11,11 @@ pytest-cov~=2.8.1
 pytest-xdist~=1.31.0
 scikit-learn~=0.22.1
 awscli>=1.18.22
-cfn-lint~=0.29.5
-cfn-flip~=1.2.2
+cfn-lint~=0.29.6
+cfn-flip~=1.2.3
 twine~=3.1.1
 wheel~=0.34.2
-sphinx~=3.0.1
+sphinx~=3.0.3
 sphinx_bootstrap_theme~=0.7.1
 moto~=1.3.14
 jupyterlab~=2.1.1