Update bash

Changes:

- https://github.com/tianon/docker-bash/commit/507d7d4: Update to commit 3235014e5b3d227ccd617b0be72d897eb476d23d
- https://github.com/tianon/docker-bash/commit/6e85e4c: Update to commit 96a2ec128b24f328a86645ef2ceaa5d4a96515ed

library/bash

@@ -3,9 +3,9 @@
 Maintainers: Tianon Gravi <[email protected]> (@tianon)
 GitRepo: https://github.com/tianon/docker-bash.git
 
-Tags: devel-20200410, devel
+Tags: devel-20200417, devel
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: ded997fd738aa0b76213595f19157a6c8afe2967
+GitCommit: 507d7d41cadc0cb879dcb319c11c163cfb8df1f8
 Directory: devel
 
 Tags: 5.0.16, 5.0, 5, latest