Update python

Changes:

- https://github.com/docker-library/python/commit/970a23e: Update to 3.5.9, pip 19.3.1

library/python

@@ -124,35 +124,35 @@ Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 22b2cebaaee699c43f4eb70c732be92ad4bf098e
 Directory: 3.6/alpine3.9
 
-Tags: 3.5.8-buster, 3.5-buster
-SharedTags: 3.5.8, 3.5
+Tags: 3.5.9-buster, 3.5-buster
+SharedTags: 3.5.9, 3.5
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a808d352739324866dc0d0752d8e859f84a9fdf9
+GitCommit: 970a23ea618292ca2132883a95c1ed02b8564d5e
 Directory: 3.5/buster
 
-Tags: 3.5.8-slim-buster, 3.5-slim-buster, 3.5.8-slim, 3.5-slim
+Tags: 3.5.9-slim-buster, 3.5-slim-buster, 3.5.9-slim, 3.5-slim
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a808d352739324866dc0d0752d8e859f84a9fdf9
+GitCommit: 970a23ea618292ca2132883a95c1ed02b8564d5e
 Directory: 3.5/buster/slim
 
-Tags: 3.5.8-stretch, 3.5-stretch
+Tags: 3.5.9-stretch, 3.5-stretch
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a808d352739324866dc0d0752d8e859f84a9fdf9
+GitCommit: 970a23ea618292ca2132883a95c1ed02b8564d5e
 Directory: 3.5/stretch
 
-Tags: 3.5.8-slim-stretch, 3.5-slim-stretch
+Tags: 3.5.9-slim-stretch, 3.5-slim-stretch
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a808d352739324866dc0d0752d8e859f84a9fdf9
+GitCommit: 970a23ea618292ca2132883a95c1ed02b8564d5e
 Directory: 3.5/stretch/slim
 
-Tags: 3.5.8-alpine3.10, 3.5-alpine3.10, 3.5.8-alpine, 3.5-alpine
+Tags: 3.5.9-alpine3.10, 3.5-alpine3.10, 3.5.9-alpine, 3.5-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a808d352739324866dc0d0752d8e859f84a9fdf9
+GitCommit: 970a23ea618292ca2132883a95c1ed02b8564d5e
 Directory: 3.5/alpine3.10
 
-Tags: 3.5.8-alpine3.9, 3.5-alpine3.9
+Tags: 3.5.9-alpine3.9, 3.5-alpine3.9
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a808d352739324866dc0d0752d8e859f84a9fdf9
+GitCommit: 970a23ea618292ca2132883a95c1ed02b8564d5e
 Directory: 3.5/alpine3.9
 
 Tags: 2.7.17-buster, 2.7-buster, 2-buster