Upgrade lint dependencies

Author: molinav

CHANGELOG.md

@@ -13,7 +13,7 @@ https://semver.org/spec/v2.0.0.html
 ## [1.3.8]
 
 ### Changed
-- Upgrade documentation dependencies.
+- Upgrade documentation and linting dependencies.
 
 ### Fixed
 - Downgrade upper pin for Cython requirement from 3.1 to 3.0 due to

packages/basemap/requirements-lint.txt

@@ -5,9 +5,13 @@ flake8 >= 2.6, < 4.0; python_version == "2.7"
 flake8 >= 2.6, < 3.0; python_version == "3.2"
 flake8 >= 2.6, < 3.0; python_version == "3.3"
 flake8 >= 2.6, < 3.9; python_version == "3.4"
-flake8 >= 2.6, < 4.1; python_version >= "3.5"
+flake8 >= 2.6, < 7.1; python_version >= "3.5"
 
 astroid >= 1.6, < 2.0; python_version == "2.7"
-astroid >= 2.4, < 3.0; python_version >= "3.5"
+astroid >= 2.4, < 2.5; python_version == "3.5"
+astroid >= 2.5, < 2.7; python_version == "3.6"
+astroid >= 2.8, < 3.0; python_version >= "3.7"
 pylint >= 1.9, < 2.0; python_version == "2.7"
-pylint >= 2.6, < 3.0; python_version >= "3.5"
+pylint >= 2.6, < 2.7; python_version == "3.5"
+pylint >= 2.7, < 2.10; python_version == "3.6"
+pylint >= 2.11, < 3.0; python_version >= "3.7"