Update scala-library to 2.12.20 in 0.12.x#535

mergify[bot] merged 1 commit intoscalapb:0.12.xscalapb/scalapb-json4s:0.12.xfrom

scala-steward:update/0.12.x/scala-library-2.12.20scala-steward/scalapb-json4s:update/0.12.x/scala-library-2.12.20Copy head branch name to clipboard