chore(deps): update davidanson/markdownlint-cli2 docker tag to v0.19.1

This MR contains the following updates:

Package	Type	Update	Change
davidanson/markdownlint-cli2	image-name	minor	v0.18.1 -> v0.19.1

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Release Notes

DavidAnson/markdownlint-cli2 (davidanson/markdownlint-cli2)

v0.19.1

Compare Source

v0.19.0

Compare Source

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