package/bash: bump to version 5.2.21

Build tested using the following config option:
    BR2_PACKAGE_BASH=y
$ ./utils/test-pkg -c bash.config  -p bash
                    bootlin-armv5-uclibc [1/6]: OK
                     bootlin-armv7-glibc [2/6]: OK
                   bootlin-armv7m-uclibc [3/6]: SKIPPED
                     bootlin-x86-64-musl [4/6]: OK
                      br-arm-full-static [5/6]: OK
                            sourcery-arm [6/6]: OK
6 builds, 1 skipped, 0 build failed, 0 legal-info failed, 0 show-info failed

Signed-off-by: Kadambini Nema <kadambini.nema@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/bash/bash.hash

@@ -1,4 +1,4 @@
 # Locally calculated after checking pgp signature from
-# https://ftp.gnu.org/gnu/bash/bash-5.2.15.tar.gz.sig
-sha256  13720965b5f4fc3a0d4b61dd37e7565c741da9a5be24edc2ae00182fc1b3588c  bash-5.2.15.tar.gz
+# https://ftp.gnu.org/gnu/bash/bash-5.2.21.tar.gz.sig
+sha256  c8e31bdc59b69aaffc5b36509905ba3e5cbb12747091d27b4b977f078560d5b8  bash-5.2.21.tar.gz
 sha256  8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING

package/bash/bash.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-BASH_VERSION = 5.2.15
+BASH_VERSION = 5.2.21
 BASH_SITE = $(BR2_GNU_MIRROR)/bash
 BASH_DEPENDENCIES = ncurses readline host-bison
 BASH_LICENSE = GPL-3.0+