Update memcached

Changes:

- https://github.com/docker-library/memcached/commit/3b01d6e: Update to 1.5.17

library/memcached

@@ -4,12 +4,12 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/memcached.git
 
-Tags: 1.5.16, 1.5, 1, latest
+Tags: 1.5.17, 1.5, 1, latest
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 015922a5c2c4d74a85e5a23d89bfc150be3b258f
+GitCommit: 3b01d6e4e0ccc504e0db13ccf3c574481fe6f801
 Directory: debian
 
-Tags: 1.5.16-alpine, 1.5-alpine, 1-alpine, alpine
+Tags: 1.5.17-alpine, 1.5-alpine, 1-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 8b8b8af37c2c6ee65e2c2b1a53c296114f0ae6ae
+GitCommit: 3b01d6e4e0ccc504e0db13ccf3c574481fe6f801
 Directory: alpine