chore(deps): bump memcached and redis to latest patch versions (#2973)

Author: mdtro

docker-compose.yml

@@ -111,15 +111,15 @@ services:
       - "sentry-smtp-log:/var/log/exim4"
   memcached:
     <<: *restart_policy
-    image: "memcached:1.6.21-alpine"
+    image: "memcached:1.6.26-alpine"
     command: ["-I", "${SENTRY_MAX_EXTERNAL_SOURCEMAP_SIZE:-1M}"]
     healthcheck:
       <<: *healthcheck_defaults
       # From: https://stackoverflow.com/a/31877626/5155484
       test: echo stats | nc 127.0.0.1 11211
   redis:
     <<: *restart_policy
-    image: "redis:6.2.13-alpine"
+    image: "redis:6.2.14-alpine"
     healthcheck:
       <<: *healthcheck_defaults
       test: redis-cli ping