Add Scala3 / JDK17 job to CI

[armanbilge]

Forgot my promise to do this in #2857 (comment) :)

Expecting the first commit to fail with the MiMa issues. Will follow-up with exclusions.

[armanbilge]

Huh. I can no longer reproduce the MiMa issues locally 🤔

[armanbilge]

Oh lol I guess the filters were already in place 😅 I must have added them in anger when trying to get MiMa to pass on my local, woops 🙃

cats-effect/build.sbt

Lines 526 to 535 in 0177c4a

	ProblemFilters.exclude[DirectMissingMethodProblem](
	"cats.effect.tracing.Tracing.bumpVersion"),
	ProblemFilters.exclude[DirectMissingMethodProblem](
	"cats.effect.tracing.Tracing.castEntry"),
	ProblemFilters.exclude[DirectMissingMethodProblem](
	"cats.effect.tracing.Tracing.match"),
	ProblemFilters.exclude[DirectMissingMethodProblem]("cats.effect.tracing.Tracing.put"),
	ProblemFilters.exclude[DirectMissingMethodProblem](
	"cats.effect.tracing.Tracing.version")
	)

[djspiewak]

Doesn't this actually remove the Scala 3 + JDK 17 job?

[armanbilge]

Um, no?
https://github.com/typelevel/cats-effect/runs/6121004966?check_suite_focus=true

[djspiewak]

Oh, it's the exclusion matrix. Sorry, not enough coffee