fix(ci): bump markdowncli-lint version

[mureinik]

Bump the markdowncli-lint version to the newest available version to solve the runtime deprecation warning about f.R_OK.

Fixes #467

[scagood]

They swapped over to esm too!

https://app.renovatebot.com/package-diff?name=markdownlint-cli&from=0.42.0&to=0.45.0

I am surprised that this can happen after running npm install -- I would have expected that without a lock file this is automatically kept updated 🤔

[mureinik]

I am surprised that this can happen after running npm install -- I would have expected that without a lock file this is automatically kept updated 🤔

@scagood It's a bit sneaky to notice, but since we're using a 0.x version of markdownlint-cli, ^0.42.0 means that npm install will take the latest 0.42.x version available. To quote node-semver's documentation:

[caret ranges] Allows changes that do not modify the left-most non-zero element in the [major, minor, patch] tuple. In other words, this allows patch and minor updates for versions 1.0.0 and above, patch updates for versions 0.X >=0.1.0, and no updates for versions 0.0.X.

[scagood]

This has caught me out so many times! 😱

Thanks for explaining!