Merge pull request #38 from http4s/update/series/0.23/http4s-core-0.23.13

Update http4s-core, http4s-laws, ... to 0.23.13 in series/0.23

Author: rossabaker

build.sbt

@@ -12,7 +12,7 @@ ThisBuild / tlSkipIrrelevantScalas := true
 
 lazy val root = project.in(file(".")).aggregate(scalaXml2, scalaXml1).enablePlugins(NoPublishPlugin)
 
-val http4sVersion = "0.23.12"
+val http4sVersion = "0.23.13"
 val scalacheckXmlVersion = "0.1.0"
 val scalaXml1Version = "1.3.0"
 val scalaXml2Version = "2.1.0"