chore(deps, releasing): Update to Alpine 3.18

Also added a note to the release checklists to look for new versions. Ideally dependabot could help
us keep up-to-date here.

Signed-off-by: Jesse Szwedko <jesse.szwedko@datadoghq.com>

.github/ISSUE_TEMPLATE/minor-release.md

@@ -11,6 +11,8 @@ The week before the release:
   - `git fetch && git checkout origin/master && git checkout -b v0.<new version number> && git push -u`
 - [ ] Create a new release preparation branch from `master`
   - `git checkout -b prepare-v0.<new version number> && git push -u`
+- [ ] Check if there is a newer version of Alpine or Debian available to update the release images
+      in `distribution/docker/`. Update if so.
 - [ ] Run `cargo vdev build release-cue` to generate a new cue file for the release
 - [ ] Add `changelog` key to generated cue file
   - [ ] `git log --no-merges --cherry-pick --right-only <last release tag>...`

distribution/docker/alpine/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/alpine:3.14 AS builder
+FROM docker.io/alpine:3.18 AS builder
 
 WORKDIR /vector
 
@@ -7,7 +7,7 @@ RUN tar -xvf vector-0*-"$(cat /etc/apk/arch)"-unknown-linux-musl*.tar.gz --strip
 
 RUN mkdir -p /var/lib/vector
 
-FROM docker.io/alpine:3.14
+FROM docker.io/alpine:3.18
 RUN apk --no-cache add ca-certificates tzdata
 
 COPY --from=builder /vector/bin/* /usr/local/bin/

distribution/docker/distroless-static/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/alpine:3.14 AS builder
+FROM docker.io/alpine:3.18 AS builder
 
 WORKDIR /vector