Update scala-library to 2.13.8

Author: scala-steward

build.sbt

@@ -17,7 +17,7 @@ inThisBuild(
 )
 
 lazy val scala212 = "2.12.15"
-lazy val scala213 = "2.13.7"
+lazy val scala213 = "2.13.8"
 lazy val scala3   = "3.1.0"
 
 lazy val scalapyVersion = getProp("plugin.scalapy.version").getOrElse("0.5.1")

src/sbt-test/integration/scalapy/build.sbt

@@ -1,7 +1,7 @@
 import ai.kien.python.Python
 
 lazy val scala212 = "2.12.15"
-lazy val scala213 = "2.13.7"
+lazy val scala213 = "2.13.8"
 lazy val scala3   = "3.1.0"
 
 ThisBuild / scalaVersion := scala213