chore(deps): update alpine Docker tag to v3.18.4 (#49)

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

Author: renovate[bot]

.goreleaser.Dockerfile

@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 ## Setup stage
-FROM alpine:3.18.3 as builder
+FROM alpine:3.18.4 as builder
 
 RUN apk --no-cache add ca-certificates tzdata
 RUN addgroup --gid 65532 kani && \