chore(deps): bump alpine from 3.18.3 to 3.18.4 (#1039)

Bumps alpine from 3.18.3 to 3.18.4.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -9,7 +9,7 @@ ARG TAG
 RUN CGO_ENABLED=0 GOOS=linux go build -o deck \
       -ldflags "-s -w -X github.com/kong/deck/cmd.VERSION=$TAG -X github.com/kong/deck/cmd.COMMIT=$COMMIT"
 
-FROM alpine:3.18.3
+FROM alpine:3.18.4
 RUN adduser --disabled-password --gecos "" deckuser
 RUN apk --no-cache add ca-certificates jq
 USER deckuser