Update bash

Changes:

- https://github.com/tianon/docker-bash/commit/f9fefbb: Update devel to 20210401, commit 8f485ff84c2d67593f8797ee10169f97163c7adb

library/bash

@@ -3,9 +3,9 @@
 Maintainers: Tianon Gravi <[email protected]> (@tianon)
 GitRepo: https://github.com/tianon/docker-bash.git
 
-Tags: devel-20210329, devel
+Tags: devel-20210401, devel
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 532ff46eba381e1d3e2f021dea4a1196b1f54b06
+GitCommit: f9fefbb47b3640c86592c011e0d208853851d98c
 Directory: devel
 
 Tags: 5.1.4, 5.1, 5, latest