Update alpine and its packages

Dockerfile

@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 # Use the official golang image to build the binary.
-FROM golang:1.23-alpine3.20 AS builder
+FROM golang:1.23-alpine3.21 AS builder
 
 ARG TARGETOS
 ARG TARGETARCH
@@ -10,12 +10,12 @@ ARG TARGETPLATFORM
 WORKDIR /gatewayd
 COPY . /gatewayd
 
-RUN apk --no-cache add git=2.45.2-r0 make=4.4.1-r2 openssl=3.3.2-r1 && \
+RUN apk --no-cache add git=2.47.2-r0 make=4.4.1-r2 openssl=3.3.2-r4 && \
     mkdir -p dist && \
     make build-platform GOOS=${TARGETOS} GOARCH=${TARGETARCH} OUTPUT_DIR=dist/${TARGETOS}-${TARGETARCH}
 
 # Use alpine to create a minimal image to run the gatewayd binary.
-FROM alpine:3.20 AS runner
+FROM alpine:3.21 AS runner
 
 ARG TARGETOS
 ARG TARGETARCH