build(deps): bump newrelic_rpm from 9.4.2 to 9.6.0

Bumps [newrelic_rpm](https://github.com/newrelic/newrelic-ruby-agent) from 9.4.2 to 9.6.0.
- [Release notes](https://github.com/newrelic/newrelic-ruby-agent/releases)
- [Changelog](https://github.com/newrelic/newrelic-ruby-agent/blob/dev/CHANGELOG.md)
- [Commits](newrelic/newrelic-ruby-agent@9.4.2...9.6.0)

---
updated-dependencies:
- dependency-name: newrelic_rpm
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -331,7 +331,8 @@ GEM
     net-ssh (7.2.0)
     netaddr (2.0.6)
     netrc (0.11.0)
-    newrelic_rpm (9.4.2)
+    newrelic_rpm (9.6.0)
+      base64
     nio4r (2.5.9)
     nokogiri (1.15.4)
       mini_portile2 (~> 2.8.2)