Update scala3-library to 3.1.3 (#538)

Author: scala-steward

build.sbt

@@ -54,7 +54,7 @@ lazy val scala211 = "2.11.12"
 lazy val scala212 = "2.12.15"
 lazy val scala213 = "2.13.8"
 lazy val scala30  = "3.0.2"
-lazy val scala31  = "3.1.2"
+lazy val scala31  = "3.1.3"
 
 lazy val compat = new MultiScalaCrossProject(
   "compat",