chore(deps): bump alpine from 3.20 to 3.21 (#4396)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Dockerfile

@@ -23,7 +23,7 @@ COPY .git/ .git/
 
 RUN ./scripts/build.sh
 
-FROM alpine:3.20
+FROM alpine:3.21
 WORKDIR /
 RUN apk update && apk add --no-cache bash ca-certificates openssh-client && update-ca-certificates
 COPY --from=builder /go/src/github.com/scaleway/scaleway-cli/scw .