[New Relic] upgrade infrastructure agent

[rioug]

Description

The latest version is v1.71.3 at the time of writing : https://docs.newrelic.com/docs/release-notes/infrastructure-release-notes/infrastructure-agent-release-notes/
Our various servers are currently using a range of version from 1.47.2 to 1.65.4.

We should be upgrading the agent regularly to stay on top of Security fixes, plus we get bug fixes and new features

Check if we can facilitate the process by using Ansible, see : https://github.com/newrelic/ansible-install