fix: dev-tools/kubernetes/metricbeat/Dockerfile.debug to reduce vulnerabilities (#34917)

Co-authored-by: snyk-bot <[email protected]>
Co-authored-by: Pierre HILBERT <[email protected]>

Author: 3 people

dev-tools/kubernetes/metricbeat/Dockerfile.debug

@@ -8,7 +8,7 @@ RUN go install github.com/go-delve/delve/cmd/dlv@latest
 
 COPY build/metricbeat-debugger /usr/share/metricbeat/metricbeat-debugger
 
-FROM alpine:3.15
+FROM alpine:3.16
 
 ENV PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/go/bin