chore(upgrades): Update OS to latest supported releases

Dockerfile.compile

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.20
 RUN apk add --update \
     openjdk11 \
     && rm -rf /var/cache/apk

Dockerfile.slim

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.20
 LABEL maintainer="[email protected]"
 RUN apk --no-cache add --update bash curl openjdk17-jre
 RUN addgroup -S -g 10111 spinnaker

Dockerfile.ubuntu

@@ -1,4 +1,4 @@
-FROM ubuntu:bionic
+FROM ubuntu:jammy
 LABEL maintainer="[email protected]"
 RUN apt-get update && apt-get -y install curl openjdk-17-jre-headless wget
 RUN adduser --system --uid 10111 --group spinnaker