Update scala-compiler, scala-library, ... to 2.12.21 - #551

Update scala-compiler, scala-library, ... to 2.12.21#551

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circe:mastercirce/circe-derivation:masterfrom

scala-steward:update/scala-compiler-2.12.21scala-steward/circe-derivation:update/scala-compiler-2.12.21Copy head branch name to clipboard