Update autopep8 requirement from ~=1.4 to ~=1.5 (appium#490)

Updates the requirements on [autopep8](https://github.com/hhatto/autopep8) to permit the latest version.
- [Release notes](https://github.com/hhatto/autopep8/releases)
- [Commits](hhatto/autopep8@v1.4...v1.5)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

Pipfile

@@ -9,7 +9,7 @@ pre-commit = "~=1.13"
 [packages]
 selenium = "~=3.141"
 
-autopep8 = "~=1.4"
+autopep8 = "~=1.5"
 
 pytest = "~=4.0"
 pytest-cov = "~=2.8"