fix: cmd/helloworld/Dockerfile to reduce vulnerabilities (#5567)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE321-MUSL-8720634
- https://snyk.io/vuln/SNYK-ALPINE321-MUSL-8720634
- https://snyk.io/vuln/SNYK-ALPINE321-OPENSSL-8690014
- https://snyk.io/vuln/SNYK-ALPINE321-OPENSSL-8690014
- https://snyk.io/vuln/SNYK-ALPINE321-OPENSSL-8710358

Signed-off-by: khanhtc1202 <khanhtc1202@gmail.com>
Co-authored-by: snyk-bot <snyk-bot@snyk.io>

Author: khanhtc1202

cmd/helloworld/Dockerfile

@@ -9,7 +9,7 @@ COPY . ./
 
 RUN make build/go MOD=helloworld
 
-FROM alpine:3.21.0
+FROM alpine:3.21.3
 
 COPY --from=builder /app/.artifacts/helloworld /usr/local/bin/helloworld