Update python

Changes:

- https://github.com/docker-library/python/commit/4d7fab1: Update to 3.9.1, pip 20.3.1

library/python

@@ -34,33 +34,33 @@ GitCommit: dc9b64baf4c01bad4ddca590418dcfdb46a13ac2
 Directory: 3.10-rc/windows/windowsservercore-ltsc2016
 Constraints: windowsservercore-ltsc2016
 
-Tags: 3.9.0-buster, 3.9-buster, 3-buster, buster
-SharedTags: 3.9.0, 3.9, 3, latest
+Tags: 3.9.1-buster, 3.9-buster, 3-buster, buster
+SharedTags: 3.9.1, 3.9, 3, latest
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
-GitCommit: ed08d468b219d19de869ba669bc4e91e2dc00cb3
+GitCommit: 4d7fab13bb44c5f271ec6412cd7b77fb2c011473
 Directory: 3.9/buster
 
-Tags: 3.9.0-slim-buster, 3.9-slim-buster, 3-slim-buster, slim-buster, 3.9.0-slim, 3.9-slim, 3-slim, slim
+Tags: 3.9.1-slim-buster, 3.9-slim-buster, 3-slim-buster, slim-buster, 3.9.1-slim, 3.9-slim, 3-slim, slim
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
-GitCommit: ed08d468b219d19de869ba669bc4e91e2dc00cb3
+GitCommit: 4d7fab13bb44c5f271ec6412cd7b77fb2c011473
 Directory: 3.9/buster/slim
 
-Tags: 3.9.0-alpine3.12, 3.9-alpine3.12, 3-alpine3.12, alpine3.12, 3.9.0-alpine, 3.9-alpine, 3-alpine, alpine
+Tags: 3.9.1-alpine3.12, 3.9-alpine3.12, 3-alpine3.12, alpine3.12, 3.9.1-alpine, 3.9-alpine, 3-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: ed08d468b219d19de869ba669bc4e91e2dc00cb3
+GitCommit: 4d7fab13bb44c5f271ec6412cd7b77fb2c011473
 Directory: 3.9/alpine3.12
 
-Tags: 3.9.0-windowsservercore-1809, 3.9-windowsservercore-1809, 3-windowsservercore-1809, windowsservercore-1809
-SharedTags: 3.9.0-windowsservercore, 3.9-windowsservercore, 3-windowsservercore, windowsservercore, 3.9.0, 3.9, 3, latest
+Tags: 3.9.1-windowsservercore-1809, 3.9-windowsservercore-1809, 3-windowsservercore-1809, windowsservercore-1809
+SharedTags: 3.9.1-windowsservercore, 3.9-windowsservercore, 3-windowsservercore, windowsservercore, 3.9.1, 3.9, 3, latest
 Architectures: windows-amd64
-GitCommit: ed08d468b219d19de869ba669bc4e91e2dc00cb3
+GitCommit: 4d7fab13bb44c5f271ec6412cd7b77fb2c011473
 Directory: 3.9/windows/windowsservercore-1809
 Constraints: windowsservercore-1809
 
-Tags: 3.9.0-windowsservercore-ltsc2016, 3.9-windowsservercore-ltsc2016, 3-windowsservercore-ltsc2016, windowsservercore-ltsc2016
-SharedTags: 3.9.0-windowsservercore, 3.9-windowsservercore, 3-windowsservercore, windowsservercore, 3.9.0, 3.9, 3, latest
+Tags: 3.9.1-windowsservercore-ltsc2016, 3.9-windowsservercore-ltsc2016, 3-windowsservercore-ltsc2016, windowsservercore-ltsc2016
+SharedTags: 3.9.1-windowsservercore, 3.9-windowsservercore, 3-windowsservercore, windowsservercore, 3.9.1, 3.9, 3, latest
 Architectures: windows-amd64
-GitCommit: ed08d468b219d19de869ba669bc4e91e2dc00cb3
+GitCommit: 4d7fab13bb44c5f271ec6412cd7b77fb2c011473
 Directory: 3.9/windows/windowsservercore-ltsc2016
 Constraints: windowsservercore-ltsc2016