build(deps): bump openpolicyagent/opa from 0.58.0-istio to 0.59.0-istio in /examples/ext_authz#686

dependabot[bot] wants to merge 1 commit intomainbirenroy/envoy:mainfrom

dependabot/docker/examples/ext_authz/openpolicyagent/opa-0.59.0-istiobirenroy/envoy:dependabot/docker/examples/ext_authz/openpolicyagent/opa-0.59.0-istioCopy head branch name to clipboard