fix(deps): update dependency probot to v12.1.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
probot (source)	12.1.1 -> 12.1.2

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Release Notes

probot/probot

v12.1.2

Compare Source

Bug Fixes

• typescript: add types for context.{repo,issue,pullRequest} (#​1622) (638a3b2)

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