Update alpine Docker tag to v3.21.0

renovate[bot] · web-flow · commit 0b2f244fd0de · 2024-12-09T23:47:19.000Z
diff --git a/docker/batch-change-volume-workspace/Dockerfile b/docker/batch-change-volume-workspace/Dockerfile
@@ -2,6 +2,6 @@
 # image that we use to run curl, git, and unzip against a Docker volume when
 # using the volume workspace.
 
-FROM alpine:3.19.1@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b
+FROM alpine:3.21.0@sha256:21dc6063fd678b478f57c0e13f47560d0ea4eeba26dfc947b2a4f81f686b9f45
 
 RUN apk add --update git unzip
