tools/bash: update to 5.2.21

Update to latest release.

Signed-off-by: Nick Hainke <vincent@systemli.org>

tools/bash/Makefile

@@ -8,11 +8,11 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=bash
 PKG_CPE_ID:=cpe:/a:gnu:bash
-PKG_VERSION:=5.2.15
+PKG_VERSION:=5.2.21
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@GNU/bash
-PKG_HASH:=13720965b5f4fc3a0d4b61dd37e7565c741da9a5be24edc2ae00182fc1b3588c
+PKG_HASH:=c8e31bdc59b69aaffc5b36509905ba3e5cbb12747091d27b4b977f078560d5b8
 
 HOST_BUILD_PARALLEL := 1