Update bash

Changes:

- https://github.com/tianon/docker-bash/commit/a464202: Merge pull request https://github.com/tianon/docker-bash/pull/21 from tianon/alpine3.12
- https://github.com/tianon/docker-bash/commit/2d420e4: Update to Alpine 3.12
- https://github.com/tianon/docker-bash/commit/cfcb6ee: Update to commit 37adc8b99d4c15dcb9e6582aa19a2ef61afb592f

library/bash

@@ -3,52 +3,52 @@
 Maintainers: Tianon Gravi <[email protected]> (@tianon)
 GitRepo: https://github.com/tianon/docker-bash.git
 
-Tags: devel-20200520, devel
+Tags: devel-20200527, devel
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 83d0cbdaaa563e4650cc99db33b4c88be4c21b29
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: devel
 
 Tags: 5.0.17, 5.0, 5, latest
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: bdb65fba59b806a9987f3b8e9d4522d5f4d49a92
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 5.0
 
 Tags: 4.4.23, 4.4, 4
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 4.4
 
 Tags: 4.3.48, 4.3
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 4.3
 
 Tags: 4.2.53, 4.2
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 4.2
 
 Tags: 4.1.17, 4.1
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 4.1
 
 Tags: 4.0.44, 4.0
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 4.0
 
 Tags: 3.2.57, 3.2, 3
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 3.2
 
 Tags: 3.1.23, 3.1
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 3.1
 
 Tags: 3.0.22, 3.0
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f55ec52c6bb3a9a1b942a775f848002826b58b8a
+GitCommit: 2d420e498d46e7241dd16e3185c8696a1f8eef36
 Directory: 3.0