package/libkrb5: bump to 1.21

The hash of the NOTICE file has changed due to:

 - Update in copyright year

 - Addition of a BSD-2-Clause license, so no change from that perspective

Signed-off-by: André Zwing <nerv@dawncrow.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libkrb5/libkrb5.hash

@@ -1,5 +1,5 @@
 # Locally calculated after checking pgp signature
-sha256  704aed49b19eb5a7178b34b2873620ec299db08752d6a8574f95d41879ab8851  krb5-1.20.1.tar.gz
+sha256  69f8aaff85484832df67a4bbacd99b9259bd95aab8c651fbbe65cdc9620ea93b  krb5-1.21.tar.gz
 
 # Hash for license file:
-sha256  cfadcf7b2ead2f3af793c25c00638c9908ac0023b101695f40cb9a03b16811dc  NOTICE
+sha256  0d5373486138cb176c063db98274b4c4ab6ef3518c4191360736384b780306c2  NOTICE

package/libkrb5/libkrb5.mk

@@ -4,9 +4,8 @@
 #
 ################################################################################
 
-LIBKRB5_VERSION_MAJOR = 1.20
-LIBKRB5_VERSION = $(LIBKRB5_VERSION_MAJOR).1
-LIBKRB5_SITE = https://web.mit.edu/kerberos/dist/krb5/$(LIBKRB5_VERSION_MAJOR)
+LIBKRB5_VERSION = 1.21
+LIBKRB5_SITE = https://web.mit.edu/kerberos/dist/krb5/$(LIBKRB5_VERSION)
 LIBKRB5_SOURCE = krb5-$(LIBKRB5_VERSION).tar.gz
 LIBKRB5_SUBDIR = src
 LIBKRB5_LICENSE = MIT, BSD-2-Clause, BSD-3-Clause, BSD-4-Clause, others