package/redis: security bump to v6.0.13

From the release notes:
================================================================================
Redis 6.0.13 Released Mon May 3 19:00:00 IST 2021
================================================================================

Upgrade urgency: SECURITY, Contains fixes to security issues that affect
authenticated client connections. LOW otherwise.

See https://github.com/redis/redis/blob/6.0.13/00-RELEASENOTES

Signed-off-by: Titouan Christophe <titouanchristophe@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/redis/redis.hash

@@ -1,5 +1,5 @@
 # From https://github.com/redis/redis-hashes/blob/master/README
-sha256  f16ad973d19f80f121e53794d5eb48a997e2c6a85b5be41bb3b66750cc17bf6b  redis-6.0.12.tar.gz
+sha256  3049763f4553ddd5a69552f41da3dd7dde9fbc524dbb15e517fee24cc73b790c  redis-6.0.13.tar.gz
 
 # Locally calculated
 sha256  97f0a15b7bbae580d2609dad2e11f1956ae167be296ab60f4691ab9c30ee9828  COPYING

package/redis/redis.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-REDIS_VERSION = 6.0.12
+REDIS_VERSION = 6.0.13
 REDIS_SITE = http://download.redis.io/releases
 REDIS_LICENSE = BSD-3-Clause (core); MIT and BSD family licenses (Bundled components)
 REDIS_LICENSE_FILES = COPYING