package/redis: security bump to v7.2.15

See the release notes:
https://github.com/redis/redis/blob/7.2.15/00-RELEASENOTES

This fixes the following vulnerability:

- Crafted RESTORE payloads in RedisBloom and TDigest may trigger
  out-of-bounds writes, potentially leading to remote code execution

(alternative to commit 44d250a2e2)
Signed-off-by: Titouan Christophe <titouan.christophe@mind.be>

package/redis/redis.hash

@@ -1,5 +1,5 @@
 # From https://github.com/redis/redis-hashes/blob/master/README
-sha256  21326da3f66c0aead4c8204c0ac52ff905337a77cadd169f75ac22835ea30025  redis-7.2.14.tar.gz
+sha256  7bf7975331511fdb788e85dae63964b128fccee1df026a10db57444babc9c9c4  redis-7.2.15.tar.gz
 
 # Locally calculated
 sha256  97f0a15b7bbae580d2609dad2e11f1956ae167be296ab60f4691ab9c30ee9828  COPYING

package/redis/redis.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-REDIS_VERSION = 7.2.14
+REDIS_VERSION = 7.2.15
 REDIS_SITE = http://download.redis.io/releases
 REDIS_LICENSE = BSD-3-Clause (core); MIT and BSD family licenses (Bundled components)
 REDIS_LICENSE_FILES = COPYING