Update memcached

Changes:

- https://github.com/docker-library/memcached/commit/697784e: Update 1 to 1.6.34
- https://github.com/docker-library/memcached/commit/c3816c8: Simplify and update `verify-templating.yml`

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: 1.6.33, 1.6, 1, latest, 1.6.33-bookworm, 1.6-bookworm, 1-bookworm, bookworm
+Tags: 1.6.34, 1.6, 1, latest, 1.6.34-bookworm, 1.6-bookworm, 1-bookworm, bookworm
 Architectures: amd64, arm32v5, arm64v8, i386, mips64le, ppc64le, s390x
-GitCommit: d2fb263f47fa4043f4fe5a207c19517585867592
+GitCommit: 697784edcf62584471e2f50e4f0646aa9db40ae7
 Directory: 1/debian
 
-Tags: 1.6.33-alpine, 1.6-alpine, 1-alpine, alpine, 1.6.33-alpine3.21, 1.6-alpine3.21, 1-alpine3.21, alpine3.21
+Tags: 1.6.34-alpine, 1.6-alpine, 1-alpine, alpine, 1.6.34-alpine3.21, 1.6-alpine3.21, 1-alpine3.21, alpine3.21
 Architectures: amd64, arm64v8, i386, ppc64le, riscv64, s390x
-GitCommit: 99a2186f3db3de537ea36046164c302d076ac2c4
+GitCommit: 697784edcf62584471e2f50e4f0646aa9db40ae7
 Directory: 1/alpine