Update sbt-buildinfo to 0.12.0 (#165)

Author: scala-steward

project/plugin.sbt

@@ -3,4 +3,4 @@ addSbtPlugin("ch.epfl.scala"  % "sbt-scalafix"   % "0.12.1")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.12")
 addSbtPlugin("org.scalameta"  % "sbt-mdoc"       % "2.5.3")
 addSbtPlugin("com.github.sbt" % "sbt-unidoc"     % "0.5.0")
-addSbtPlugin("com.eed3si9n"   % "sbt-buildinfo"  % "0.11.0")
+addSbtPlugin("com.eed3si9n"   % "sbt-buildinfo"  % "0.12.0")