Update memcached

Changes:

- https://github.com/docker-library/memcached/commit/cc2c8b4: Merge pull request https://github.com/docker-library/memcached/pull/78 from J0WI/alpine-3.16
- https://github.com/docker-library/memcached/commit/a418b99: Alpine 3.16

library/memcached

@@ -9,7 +9,7 @@ Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
 GitCommit: f7015c3dba3b87f3793f217db5e06ceec77f43ee
 Directory: debian
 
-Tags: 1.6.15-alpine, 1.6-alpine, 1-alpine, alpine, 1.6.15-alpine3.15, 1.6-alpine3.15, 1-alpine3.15, alpine3.15
+Tags: 1.6.15-alpine, 1.6-alpine, 1-alpine, alpine, 1.6.15-alpine3.16, 1.6-alpine3.16, 1-alpine3.16, alpine3.16
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f7015c3dba3b87f3793f217db5e06ceec77f43ee
+GitCommit: a418b99b8146b385ce2b1b7a71dce0bfdcc454dc
 Directory: alpine