Bot ignore Azure pipelines failures

[Geod24]

Seen in dlang/dmd#11286
It broke HEAD a few weeks ago.

I'm going to go out of a hunch and guess that's because Azure pipeline are Github checks. A way to confirm this theory would be to have an always-failing Github CI check and see if the bot merges.

[wilzbach]

Yes, dlang-bot is a lot older than the GitHub checks, so yep it isn't even aware of them.

[CyberShadow]

Is this a dupe of #243?