python-cryptography: Update to 3.1

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python/python-cryptography/Makefile

@@ -8,11 +8,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=python-cryptography
-PKG_VERSION:=3.0
+PKG_VERSION:=3.1
 PKG_RELEASE:=1
 
 PYPI_NAME:=cryptography
-PKG_HASH:=8e924dbc025206e97756e8903039662aa58aa9ba357d8e1d8fc29e3092322053
+PKG_HASH:=26409a473cc6278e4c90f782cd5968ebad04d3911ed1c402fc86908c17633e08
 
 PKG_LICENSE:=Apache-2.0 BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE.APACHE LICENSE.BSD