python-cryptography: bump to version 1.2.3

Is now compatible with openssl 1.0.2g+ hence fixes:
http://autobuild.buildroot.net/results/5fc/5fc28bafa3cd7171ce6343d21f65af090536f443/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-cryptography/python-cryptography.hash

@@ -1,3 +1,4 @@
-# md5 from https://pypi.python.org/pypi?:action=show_md5&digest=2b25eebd1d3c6bae52b46f0dcec74dfb, sha256 locally computed
-md5     2b25eebd1d3c6bae52b46f0dcec74dfb  cryptography-1.2.2.tar.gz
-sha256  3f219cb9106d9b737ea9c332c4d15d70ac328f91b59fd9d79f78bdea8f826a67  cryptography-1.2.2.tar.gz
+# From https://pypi.python.org/pypi?:action=show_md5&digest=5474d2b3e8c7555a60852e48d2743f85
+md5     5474d2b3e8c7555a60852e48d2743f85  cryptography-1.2.3.tar.gz
+# Calculated based on the hash above
+sha256  8eb11c77dd8e73f48df6b2f7a7e16173fe0fe8fdfe266232832e88477e08454e  cryptography-1.2.3.tar.gz

package/python-cryptography/python-cryptography.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-PYTHON_CRYPTOGRAPHY_VERSION = 1.2.2
+PYTHON_CRYPTOGRAPHY_VERSION = 1.2.3
 PYTHON_CRYPTOGRAPHY_SOURCE = cryptography-$(PYTHON_CRYPTOGRAPHY_VERSION).tar.gz
 PYTHON_CRYPTOGRAPHY_SITE = https://pypi.python.org/packages/source/c/cryptography
 PYTHON_CRYPTOGRAPHY_SETUP_TYPE = setuptools