Merge pull request #1023 from fluxcd/alpine-319

build: update Alpine to 3.19

Dockerfile

@@ -1,5 +1,5 @@
 ARG GO_VERSION=1.20
-ARG XX_VERSION=1.2.1
+ARG XX_VERSION=1.3.0
 
 FROM --platform=$BUILDPLATFORM tonistiigi/xx:${XX_VERSION} AS xx
 
@@ -30,7 +30,7 @@ COPY internal/ internal/
 ENV CGO_ENABLED=0
 RUN xx-go build -trimpath -a -o kustomize-controller main.go
 
-FROM alpine:3.18
+FROM alpine:3.19
 
 ARG TARGETPLATFORM