Update python

Changes:

- https://github.com/docker-library/python/commit/9f79a9d: Update to 3.9.0a5, pip 20.0.2

library/python

@@ -4,28 +4,28 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/python.git
 
-Tags: 3.9.0a4-buster, 3.9-rc-buster, rc-buster
-SharedTags: 3.9.0a4, 3.9-rc, rc
+Tags: 3.9.0a5-buster, 3.9-rc-buster, rc-buster
+SharedTags: 3.9.0a5, 3.9-rc, rc
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 905c16b0473668acb80f717494789c438ab0f0f9
+GitCommit: 9f79a9df8fec373757cd0c2a2a75ce41c113e28b
 Directory: 3.9-rc/buster
 
-Tags: 3.9.0a4-alpine3.10, 3.9-rc-alpine3.10, rc-alpine3.10
+Tags: 3.9.0a5-alpine3.10, 3.9-rc-alpine3.10, rc-alpine3.10
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 905c16b0473668acb80f717494789c438ab0f0f9
+GitCommit: 9f79a9df8fec373757cd0c2a2a75ce41c113e28b
 Directory: 3.9-rc/alpine3.10
 
-Tags: 3.9.0a4-windowsservercore-ltsc2016, 3.9-rc-windowsservercore-ltsc2016, rc-windowsservercore-ltsc2016
-SharedTags: 3.9.0a4-windowsservercore, 3.9-rc-windowsservercore, rc-windowsservercore, 3.9.0a4, 3.9-rc, rc
+Tags: 3.9.0a5-windowsservercore-ltsc2016, 3.9-rc-windowsservercore-ltsc2016, rc-windowsservercore-ltsc2016
+SharedTags: 3.9.0a5-windowsservercore, 3.9-rc-windowsservercore, rc-windowsservercore, 3.9.0a5, 3.9-rc, rc
 Architectures: windows-amd64
-GitCommit: 905c16b0473668acb80f717494789c438ab0f0f9
+GitCommit: 9f79a9df8fec373757cd0c2a2a75ce41c113e28b
 Directory: 3.9-rc/windows/windowsservercore-ltsc2016
 Constraints: windowsservercore-ltsc2016
 
-Tags: 3.9.0a4-windowsservercore-1809, 3.9-rc-windowsservercore-1809, rc-windowsservercore-1809
-SharedTags: 3.9.0a4-windowsservercore, 3.9-rc-windowsservercore, rc-windowsservercore, 3.9.0a4, 3.9-rc, rc
+Tags: 3.9.0a5-windowsservercore-1809, 3.9-rc-windowsservercore-1809, rc-windowsservercore-1809
+SharedTags: 3.9.0a5-windowsservercore, 3.9-rc-windowsservercore, rc-windowsservercore, 3.9.0a5, 3.9-rc, rc
 Architectures: windows-amd64
-GitCommit: 905c16b0473668acb80f717494789c438ab0f0f9
+GitCommit: 9f79a9df8fec373757cd0c2a2a75ce41c113e28b
 Directory: 3.9-rc/windows/windowsservercore-1809
 Constraints: windowsservercore-1809