Update memcached

Changes:

- https://github.com/docker-library/memcached/commit/70a1ff5: Merge pull request https://github.com/docker-library/memcached/pull/105 from infosiftr/no-alpine-arm32
- https://github.com/docker-library/memcached/commit/21a5d87: Remove Alpine arm32 builds

library/memcached

@@ -1,4 +1,4 @@
-# this file is generated via https://github.com/docker-library/memcached/blob/9152f806bff0607bbd25bae9e00b55389498e3da/generate-stackbrew-library.sh
+# this file is generated via https://github.com/docker-library/memcached/blob/21a5d87662fdb80f684959c3eaf0445f0107f933/generate-stackbrew-library.sh
 
 Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
@@ -10,6 +10,6 @@ GitCommit: f8aa037f70e96f77b3797a2ead8fa0e5dcdec2c1
 Directory: 1/debian
 
 Tags: 1.6.38-alpine, 1.6-alpine, 1-alpine, alpine, 1.6.38-alpine3.22, 1.6-alpine3.22, 1-alpine3.22, alpine3.22
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
+Architectures: amd64, arm64v8, i386, ppc64le, riscv64, s390x
 GitCommit: 9d786e2bceabc841c7858127de29ad969454d9ac
 Directory: 1/alpine