Bump version for pypi

Signed-off-by: Michael Peters <mpeters@redhat.com>

Author: mpeters

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = keylime
-version = 6.4.0
+version = 6.4.1
 description = TPM-based key bootstrapping and system integrity measurement system for cloud
 long_description= file: _pypi-notice.md, README.md
 long_description_content_type = text/markdown; charset=UTF-8