Adding awscognito to passwordHasher

[keivanmojmali]

Hey guys. Thanks for the script. I noticed that only a portion of my users transferred and the logs were showing "code": "invalid_enum_value". I added "awscognito" to the passwordHasher list and it was able to take in all of my awscognito passwordDigests

Thank you!

passwordHasher: z
.enum([
"argon2i",
"argon2id",
"bcrypt",
"md5",
"pbkdf2_sha256",
"pbkdf2_sha256_django",
"pbkdf2_sha1",
"scrypt_firebase",
"awscognito",
])