Merge pull request #293 from danielepantaleone/bugfix/container-trait-minimum-swift-version

Revert back minimum swift version to 6.1 in ContainerTrait

Author: hmlongco

Sources/FactoryTesting/ContainerTrait.swift

@@ -25,7 +25,7 @@
 //
 
 #if DEBUG
-#if swift(>=5.5)
+#if swift(>=6.1)
 
 import Factory
 import Testing