Update bash

Changes:

- https://github.com/tianon/docker-bash/commit/834aebe: Update devel to 20210802, commit 0edd0a91830376f95f085d0ca3ba82502568fe18

library/bash

@@ -3,9 +3,9 @@
 Maintainers: Tianon Gravi <[email protected]> (@tianon)
 GitRepo: https://github.com/tianon/docker-bash.git
 
-Tags: devel-20210719, devel
+Tags: devel-20210802, devel
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: b34fff78217144116578eabce70368b50a7505fc
+GitCommit: 834aebef6aa02a19254bc39727950e0891f18f62
 Directory: devel
 
 Tags: 5.1.8, 5.1, 5, latest