package/python3: security bump version to 3.7.3

Also remove upstream patch 0033.

Fixes the following security issues:

- bpo-36216: Changes urlsplit() to raise ValueError when the URL contains
  characters that decompose under IDNA encoding (NFKC-normalization) into
  characters that affect how the URL is parsed.

- bpo-35746: [CVE-2019-5010] Fix a NULL pointer deref in ssl module.  The
  cert parser did not handle CRL distribution points with empty DP or URI
  correctly.  A malicious or buggy certificate can result into segfault.
  Vulnerability (TALOS-2018-0758) reported by Colin Read and Nicolas Edet of
  Cisco.

- bpo-35121: Don’t send cookies of domain A without Domain attribute to
  domain B when domain A is a suffix match of domain B while using a
  cookiejar with http.cookiejar.DefaultCookiePolicy policy.  Patch by
  Karthikeyan Singaravelan.

For more details, see the changelog:
https://docs.python.org/3.7/whatsnew/changelog.html#python-3-7-3-final

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 6afc83b60f)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python3/python3.hash

@@ -1,5 +1,5 @@
-# From https://www.python.org/downloads/release/python-372/
-md5		df6ec36011808205beda239c72f947cb Python-3.7.2.tar.xz
+# From https://www.python.org/downloads/release/python-373/
+md5		93df27aec0cd18d6d42173e601ffbbfd Python-3.7.3.tar.xz
 # Locally computed
-sha256 d83fe8ce51b1bb48bbcf0550fd265b9a75cdfdfa93f916f9e700aef8444bf1bb Python-3.7.2.tar.xz
+sha256 da60b54064d4cfcd9c26576f6df2690e62085123826cff2e667e72a91952d318 Python-3.7.3.tar.xz
 sha256 b9a6d9320b8f2693e8d41e496ce56caadacaddcca9be2a64a61749278f425cf2 LICENSE