Update zkemail dependency to use Aztec v4.2.0 compatibility

Author: critesjosh

zkemail_verification/circuit/Nargo.toml

@@ -5,5 +5,5 @@ authors = [""]
 compiler_version = ">=1.0.0"
 
 [dependencies]
-zkemail = { path = "/workspaces/sandbox/zkemail.nr/lib" }
+zkemail = { tag = "update/aztec-4.2.0-compat", git = "https://github.com/critesjosh/zkemail.nr", directory = "lib" }
 sha256 = { git = "https://github.com/noir-lang/sha256", tag = "v0.3.0" }