Enable debug mode for GitHub Actions

[ghostwriter]

• Check if the environment variable ACTIONS_RUNNER_DEBUG is present, to set the log level to DEBUG mode via GitHub Actions.
• Note: it does not overwrite the default LOG_LEVEL environment variable.

[Ocramius]

Very clever usage of the debug flag of github actions: nice!

[boesing]

I'd say we should enable debug logging in every case.
What I experienced many times now was, that the action creates the git tag and then fails to create the release on github due to the API is not providing the expected status code.

If you then "re-run" the action again with the debug flag, git tag command will fail and you only get debug up to the git tag error but you are unable to understand the invalid API response error.

[Ocramius]

I'd be up for it: was hesitant because I'm worried about secret leaks in logs.

I already hardened the logger against it:

automatic-releases/src/Monolog/ConvertLogContextHttpRequestsIntoStrings.php

Lines 35 to 40 in 49d9580

	return $item->getMethod()
	. ' '
	. $item
	->getUri()
	->withUserInfo('')
	->__toString();

If this filtering is sufficient for our future use-cases, then we should be OK with having verbose logging at all times.

[Ocramius]

Another thing to think about is if we can re-design the default pipeline so it is in "stages" that can be retried individually 🤔

[boesing]

I guess that would be the best. Or at least having checks like "does tag already exist then assume tagging was successfully"?
If a tag is available thats most probably because something went wrong earlier OR some1 failed setting up his project.
Maybe double-checking if the current commit is the same commit which is already tagged or sth. like this.