docs: release notes for agent 1.42.3

src/content/docs/release-notes/infrastructure-release-notes/infrastructure-agent-release-notes/new-relic-infrastructure-agent-1423.mdx

@@ -0,0 +1,12 @@
+---
+subject: Infrastructure agent
+releaseDate: '2023-06-01'
+version: 1.42.3
+---
+
+A new version of the agent has been released. Follow standard procedures to [update the Infrastructure agent](/docs/infrastructure/install-configure-manage-infrastructure/update-or-uninstall/update-infrastructure-agent).
+
+We recommends that you upgrade the agent regularly and at a minimum every 3 months. As of this release, the oldest supported version is [Infrastructure agent 1.27.0](https://docs.newrelic.com/docs/release-notes/infrastructure-release-notes/infrastructure-agent-release-notes/new-relic-infrastructure-agent-1270/).
+
+## Fixed
+* Ensure containerDecorator is not nil in containerd environments