Update munit-cats-effect to 2.1.0 (#32)

Co-authored-by: horothesun-scala-steward[bot] <132169906+horothesun-scala-steward[bot]@users.noreply.github.com>

Author: horothesun-scala-steward[bot]

Main.scala

@@ -6,6 +6,6 @@
 //> using dep org.tpolecat::doobie-postgres:1.0.0-RC8
 
 //> using test.dep org.scalameta::munit:1.1.0
-//> using test.dep org.typelevel::munit-cats-effect:2.0.0
+//> using test.dep org.typelevel::munit-cats-effect:2.1.0
 
 @main def main(): Unit = println("Nothing interesting to see here, check the tests!")