fix: cmd/apiserver/Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE318-OPENSSL-6032386
- https://snyk.io/vuln/SNYK-ALPINE318-OPENSSL-6032386
- https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-7249236
- https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-7249265
- https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-7249419

cmd/apiserver/Dockerfile

@@ -24,7 +24,7 @@ RUN CGO_ENABLED=0 \
       -o vela-prism \
       cmd/apiserver/main.go
 
-FROM alpine:3.18.3
+FROM alpine:3.18
 # This is required by daemon connnecting with cri
 RUN apk add --no-cache ca-certificates bash expat
 RUN apk add curl