Update dependency yamllint to v1.28.0

This MR contains the following updates:

Package	Update	Change
yamllint	minor	==1.27.1 -> ==1.28.0

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Release Notes

adrienverge/yamllint

v1.28.0

Compare Source

• Better compress PNG image in documentation
• Remove __future__ imports specific to Python 2
• Remove inheritance from object specific to Python 2
• Simplify GitHub Actions example in documentation
• Update ALE vim plugin link in documentation
• Update license to latest version of GPLv3
• Pre-compile disable/enable rules regexes
• Rule quoted-strings: add allow-quoted-quotes option
• Add option ignore-from-file in config

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