Update alpine Docker tag to v3.23.3

Author: renovate[bot]

Dockerfile

@@ -8,7 +8,7 @@ RUN go mod download
 COPY . .
 RUN CGO_ENABLED=0 go build -ldflags="-s -w" -o burrow ./cmd/burrow
 
-FROM alpine:3.21.3
+FROM alpine:3.23.3
 
 RUN apk add --no-cache ca-certificates