Merge pull request #744 from typelevel/update/magnolia-1.3.20

Update magnolia to 1.3.20

Author: vlovgr

build.sbt

@@ -4,7 +4,7 @@ val disciplineScalaTestVersion = "2.3.0"
 val enumeratumVersion = "1.9.7"
 val jacksonVersion = "2.21.3"
 val magnolia2Version = "0.17.0"
-val magnolia3Version = "1.3.18"
+val magnolia3Version = "1.3.20"
 val munitVersion = "1.3.0"
 val munitScalaCheckVersion = "1.3.0"
 val refinedVersion = "0.11.3"