python3: update python3 versions and remove python3.6

See merge request nexedi/slapos!1239

component/python3/buildout.cfg

@@ -9,7 +9,6 @@ extends =
   ../libpng/buildout.cfg
   ../ncurses/buildout.cfg
   ../openssl/buildout.cfg
-  ../patch/buildout.cfg
   ../readline/buildout.cfg
   ../sqlite3/buildout.cfg
   ../xz-utils/buildout.cfg
@@ -28,9 +27,6 @@ package_version_suffix =
 
 executable = @@LOCATION@@/bin/${:_buildout_section_name_}
 
-patch-options = -p1
-patches =
-  ${:_profile_base_location_}/default_encoding.patch#4ad9664e622d5556b4c32b1d9cb587ff
 url =
   https://www.python.org/ftp/python/${:package_version}/Python-${:package_version}${:package_version_suffix}.tar.xz
 configure-options =
@@ -48,45 +44,30 @@ pre-install = mkdir profile-opt
 # the entry "-Wl,-rpath=${file:location}/lib" below is needed by python-magic,
 # which would otherwise load the system libmagic.so with ctypes
 environment =
-  PATH=${patch:location}/bin:${xz-utils:location}/bin:%(PATH)s
+  PATH=${xz-utils:location}/bin:%(PATH)s
   CPPFLAGS=-I${zlib:location}/include -I${xz-utils:location}/include -I${readline:location}/include -I${libexpat:location}/include -I${libffi:location}/include -I${ncurses:location}/include -I${ncurses:location}/include -I${bzip2:location}/include  -I${gdbm:location}/include -I${openssl:location}/include -I${sqlite3:location}/include -I${gettext:location}/include
   LDFLAGS=-L${zlib:location}/lib -L${xz-utils:location}/lib -L${readline:location}/lib -L${libexpat:location}/lib -L${libffi:location}/lib -L${ncurses:location}/lib -L${bzip2:location}/lib -L${gdbm:location}/lib -L${openssl:location}/lib -L${sqlite3:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${xz-utils:location}/lib -Wl,-rpath=${readline:location}/lib -Wl,-rpath=${libexpat:location}/lib -Wl,-rpath=${libffi:location}/lib -Wl,-rpath=${ncurses:location}/lib -Wl,-rpath=${bzip2:location}/lib -Wl,-rpath=${gdbm:location}/lib -Wl,-rpath=${openssl:location}/lib -Wl,-rpath=${sqlite3:location}/lib -L${gettext:location}/lib -Wl,-rpath=${gettext:location}/lib -Wl,-rpath=${file:location}/lib
 
-[python3.6]
-<= python3-common
-version = 3.6
-package_version = 3.6.10
-md5sum = 986078f11b39074be22a199e56491d98
-
 [python3.7]
 <= python3-common
 version = 3.7
-package_version = 3.7.9
-md5sum = 389d3ed26b4d97c741d9e5423da1f43b
-patch-options =
-patches =
+package_version = 3.7.13
+md5sum = 10822726f75fd7efe05a94fbd6ac2258
 
 [python3.8]
 <= python3-common
 version = 3.8
-package_version = 3.8.9
-md5sum = 51b5bbf2ab447e66d15af4883db1c133
-patch-options =
-patches =
+package_version = 3.8.13
+md5sum = c4b7100dcaace9d33ab1fda9a3a038d6
 
 [python3.9]
 <= python3-common
 version = 3.9
 package_version = 3.9.13
 md5sum = 5e2411217b0060828d5f923eb422a3b8
-patch-options =
-patches =
-
 
 [python3.10]
 <= python3-common
 version = 3.10
-package_version = 3.10.5
-md5sum = f05727cb3489aa93cd57eb561c16747b
-patch-options =
-patches =
+package_version = 3.10.6
+md5sum = afc7e14f7118d10d1ba95ae8e2134bf0

component/python3/default_encoding.patch

---- Python-3.5.3/Programs/python.c.orig	2017-01-17 08:57:53.000000000 +0100
-+++ Python-3.5.3/Programs/python.c	2017-06-08 19:30:42.927077437 +0200
-@@ -24,6 +24,9 @@
-     int i, res;
-     char *oldloc;
- 
-+    if (!getenv("LC_CTYPE") && !getenv("LC_ALL"))
-+        setenv("LANG", "C.UTF-8", 0);
-+
-     argv_copy = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
-     argv_copy2 = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
-     if (!argv_copy || !argv_copy2) {