Add swift 4.1 (#4212)

library/swift

@@ -2,7 +2,12 @@ Maintainers: Haris Amin <[email protected]> (@hamin),
              Thomas Catterall <[email protected]> (@swizzlr)
 GitRepo: https://github.com/swiftdocker/docker-swift.git
 
-Tags: 4.0.3, 4.0, 4, latest
+
+Tags: 4.1, 4, latest
+GitCommit: 49f192d9218dbbc6438224ccc776e21b08e5dabe
+Directory: 4.1
+
+Tags: 4.0.3, 4.0
 GitCommit: bc8cb3032ffd6a05d3eddf9cf885139277c11642
 Directory: 4.0