Update cats-core to 2.13.0

Author: typelevel-steward[bot]

build.sbt

@@ -36,7 +36,7 @@ lazy val core = crossProject(JVMPlatform, JSPlatform, NativePlatform)
   .settings(
     name := "twiddles-core",
     libraryDependencies ++= Seq(
-      "org.typelevel" %%% "cats-core" % "2.12.0",
+      "org.typelevel" %%% "cats-core" % "2.13.0",
       "org.scalameta" %%% "munit" % "1.0.1"
     ) ++ (if (scalaVersion.value.startsWith("2.")) Seq("com.chuusai" %%% "shapeless" % "2.3.12")
           else Nil),