Deprecate `\markdownInfo`, `\markdownWarning`, and `\markdownError` #2553

Job	Run time
Style check (Lua)	40s
Style check (Bash)	6s
Style check (Python)	25s
Style check (Markdown)	55s
Type check (Python)	39s
Build Docker image (TL2022-historic)	7s
Build Docker image (latest)	9s
Test Docker image	0s
Publish Docker image	0s
Automatically merge pull request	0s
Publish artefacts and create a prerelease	0s
	3m 1s

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