numpy: bump to version 1.21.2

Switch to AUTORELEASE for PKG_RELEASE.
And update Cython as well.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python/host-pip-requirements/Cython.txt

@@ -1 +1 @@
-Cython==0.29.23 --hash=sha256:6a0d31452f0245daacb14c979c77e093eb1a546c760816b5eed0047686baad8e
+Cython==0.29.24 --hash=sha256:cdf04d07c3600860e8c2ebaad4e8f52ac3feb212453c1764a49ac08c827e8443

lang/python/numpy/Makefile

@@ -6,11 +6,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=numpy
-PKG_VERSION:=1.21.1
-PKG_RELEASE:=2
+PKG_VERSION:=1.21.2
+PKG_RELEASE:=$(AUTORELEASE)
 
 PYPI_NAME:=$(PKG_NAME)
-PKG_HASH:=dff4af63638afcc57a3dfb9e4b26d434a7a602d225b42d746ea7fe2edf1342fd
+PKG_HASH:=423216d8afc5923b15df86037c6053bf030d15cc9e3224206ef868c2d63dd6dc
 
 PKG_MAINTAINER:=Alexandru Ardelean <ardeleanalex@gmail.com>