package/samba4: bump version to 4.21.3

Release notes:
https://www.samba.org/samba/history/samba-4.21.3.html
https://www.samba.org/samba/history/samba-4.21.2.html
https://www.samba.org/samba/history/samba-4.21.1.html

Signed-off-by: Akhilesh Nema <nemaakhilesh@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/samba4/samba4.hash

@@ -1,4 +1,4 @@
 # Locally calculated after checking pgp signature
-# https://download.samba.org/pub/samba/stable/samba-4.20.6.tar.asc
-sha256  8fe37f9e7817b6583fa55a0a15568b8e6be8875513741312ef805484b102ccf7  samba-4.20.6.tar.gz
+# https://download.samba.org/pub/samba/stable/samba-4.21.3.tar.asc
+sha256  ae2179a613e7a5d4088735ab100d4ca1cae0f92374d6307e22eaec13ad90125c  samba-4.21.3.tar.gz
 sha256  8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING

package/samba4/samba4.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SAMBA4_VERSION = 4.20.6
+SAMBA4_VERSION = 4.21.3
 SAMBA4_SITE = https://download.samba.org/pub/samba/stable
 SAMBA4_SOURCE = samba-$(SAMBA4_VERSION).tar.gz
 SAMBA4_INSTALL_STAGING = YES