Merge pull request #45 from scala-steward/update/http4s-blaze-client-0.21.0-M6

Update http4s-blaze-client, http4s-circe, ... to 0.21.0-M6

Author: ChristopherDavenport

build.sbt

@@ -4,7 +4,7 @@ import sbtcrossproject.CrossPlugin.autoImport.{crossProject, CrossType}
 val catsV = "2.0.0"
 val catsEffectV = "2.0.0"
 val fs2V = "2.1.0"
-val http4sV = "0.21.0-M5"
+val http4sV = "0.21.0-M6"
 val circeV = "0.12.3"
 val catsEffectTestingV = "0.3.0"
 val log4catsV = "1.0.1"