Update bash

Changes:

- https://github.com/tianon/docker-bash/commit/b34fff7: Update devel to 20210719, commit 6650b4de61f9f6df2e39718a86dafb9ea36c144a

library/bash

@@ -3,9 +3,9 @@
 Maintainers: Tianon Gravi <[email protected]> (@tianon)
 GitRepo: https://github.com/tianon/docker-bash.git
 
-Tags: devel-20210712, devel
+Tags: devel-20210719, devel
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 69328435dd4efeaa999cc2f70f782bfc36c992d4
+GitCommit: b34fff78217144116578eabce70368b50a7505fc
 Directory: devel
 
 Tags: 5.1.8, 5.1, 5, latest