chore(deps): update gsoci.azurecr.io/giantswarm/alpine docker tag to …

…v3.21.2 (#1540)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM gsoci.azurecr.io/giantswarm/alpine:3.21.1 AS binaries
+FROM gsoci.azurecr.io/giantswarm/alpine:3.21.2 AS binaries
 
 ARG KUBECTL_VERSION=1.24.2
 ARG TARGETPLATFORM
@@ -8,7 +8,7 @@ RUN apk add --no-cache ca-certificates curl \
     && curl -sSLf https://storage.googleapis.com/kubernetes-release/release/v${KUBECTL_VERSION}/bin/${TARGETPLATFORM}/kubectl -o /binaries/kubectl \
     && chmod +x /binaries/*
 
-FROM gsoci.azurecr.io/giantswarm/alpine:3.21.1
+FROM gsoci.azurecr.io/giantswarm/alpine:3.21.2
 
 ARG TARGETARCH