bump version to 1.4.1

Author: mattsb42-aws

src/aws_encryption_sdk/identifiers.py

@@ -27,7 +27,7 @@
     # We only actually need these imports when running the mypy checks
     pass
 
-__version__ = "1.4.0"
+__version__ = "1.4.1"
 USER_AGENT_SUFFIX = "AwsEncryptionSdkPython/{}".format(__version__)