package/python: bump version to 2.7.18

Release notes:
https://pythoninsider.blogspot.com/2020/04/python-2718-last-release-of-python-2.html

Updated license hash due to upstream commit:
https://github.com/python/cpython/commit/aa5b196c180d4c1dbe5a8593e55066e630d38c09

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 3586b0703fa9a8b4138ac4bf9e274c7f1bef2e6c)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python/python.hash

@@ -1,5 +1,5 @@
-# From https://www.python.org/downloads/release/python-2717/
-md5 b3b6d2c92f42a60667814358ab9f0cfd Python-2.7.17.tar.xz
+# From https://www.python.org/downloads/release/python-2718/
+md5  fd6cc8ec0a78c44036f825e739f36e5a Python-2.7.18.tar.xz
 # Locally calculated
-sha256 4d43f033cdbd0aa7b7023c81b0e986fd11e653b5248dac9144d508f11812ba41  Python-2.7.17.tar.xz
-sha256 a77d71d6be6f9032e6b6e5d2cf6da68f9eeab9036edfbc043633c8979cd5e82c  LICENSE
+sha256  b62c0e7937551d0cc02b8fd5cb0f544f9405bafc9a54d3808ed4594812edef43  Python-2.7.18.tar.xz
+sha256  de4d1f2d2ad5ad0cfd1657a106476b31cb5db5ef9d1ff842b237c0c81f0c8a23  LICENSE

package/python/python.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 PYTHON_VERSION_MAJOR = 2.7
-PYTHON_VERSION = $(PYTHON_VERSION_MAJOR).17
+PYTHON_VERSION = $(PYTHON_VERSION_MAJOR).18
 PYTHON_SOURCE = Python-$(PYTHON_VERSION).tar.xz
 PYTHON_SITE = https://python.org/ftp/python/$(PYTHON_VERSION)
 PYTHON_LICENSE = Python-2.0, others