Update python

Changes:

- https://github.com/docker-library/python/commit/bf3dc9a: Merge pull request https://github.com/docker-library/python/pull/384 from infosiftr/eol-3.4
- https://github.com/docker-library/python/commit/b162f58: Remove 3.4 (EOL)

library/python

@@ -187,42 +187,6 @@ Architectures: amd64, arm32v6, arm64v8, i386, ppc64le, s390x
 GitCommit: f991b3773d8f50486cfdd06a6f5c208ce38e1ed3
 Directory: 3.5/alpine3.8
 
-Tags: 3.4.10-stretch, 3.4-stretch
-SharedTags: 3.4.10, 3.4
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: cd7d18f5e1eff40186b496ca214e330ea02edb07
-Directory: 3.4/stretch
-
-Tags: 3.4.10-slim-stretch, 3.4-slim-stretch, 3.4.10-slim, 3.4-slim
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: cd7d18f5e1eff40186b496ca214e330ea02edb07
-Directory: 3.4/stretch/slim
-
-Tags: 3.4.10-jessie, 3.4-jessie
-Architectures: amd64, arm32v5, arm32v7, i386
-GitCommit: cd7d18f5e1eff40186b496ca214e330ea02edb07
-Directory: 3.4/jessie
-
-Tags: 3.4.10-slim-jessie, 3.4-slim-jessie
-Architectures: amd64, arm32v5, arm32v7, i386
-GitCommit: cd7d18f5e1eff40186b496ca214e330ea02edb07
-Directory: 3.4/jessie/slim
-
-Tags: 3.4.10-wheezy, 3.4-wheezy
-Architectures: amd64, arm32v5, arm32v7, i386
-GitCommit: cd7d18f5e1eff40186b496ca214e330ea02edb07
-Directory: 3.4/wheezy
-
-Tags: 3.4.10-alpine3.9, 3.4-alpine3.9, 3.4.10-alpine, 3.4-alpine
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: cd7d18f5e1eff40186b496ca214e330ea02edb07
-Directory: 3.4/alpine3.9
-
-Tags: 3.4.10-alpine3.8, 3.4-alpine3.8
-Architectures: amd64, arm32v6, arm64v8, i386, ppc64le, s390x
-GitCommit: cd7d18f5e1eff40186b496ca214e330ea02edb07
-Directory: 3.4/alpine3.8
-
 Tags: 2.7.16-stretch, 2.7-stretch, 2-stretch
 SharedTags: 2.7.16, 2.7, 2
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x