chore: Update snapbox

Author: epage

Cargo.lock

@@ -183,7 +183,7 @@ rustversion = "1.0.15"
 # Cutting out `filesystem` feature
 trycmd = { version = "0.15.3", default-features = false, features = ["color-auto", "diff", "examples"] }
 humantime = "2.1.0"
-snapbox = "0.6.0"
+snapbox = "0.6.16"
 shlex = "1.3.0"
 automod = "1.0.14"