Bump alpine from e323a46 to 21dc606 in /yaml (#149)

Bumps alpine from `e323a46` to `21dc606`.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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yaml/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.21.0@sha256:e323a465c03a31ad04374fc7239144d0fd4e2b92da6e3e0655580476d3a84621
+FROM alpine:3.21.0@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45
 
 HEALTHCHECK NONE