chore: infra-agent 1.58.1 release doc

src/content/docs/release-notes/infrastructure-release-notes/infrastructure-agent-release-notes/new-relic-infrastructure-agent-1581.mdx

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+---
+subject: Infrastructure agent
+releaseDate: '2024-12-16'
+version: 1.58.1
+---
+
+A new version of the agent is now available. Follow standard procedures to [update the Infrastructure agent](https://docs.newrelic.com/docs/infrastructure/install-configure-manage-infrastructure/update-or-uninstall/update-infrastructure-agent).
+New Relic recommends that you upgrade the agent and at a minimum every 3 months. As of this release, the oldest supported version is [Infrastructure agent 1.48.1](https://docs.newrelic.com/docs/release-notes/infrastructure-release-notes/infrastructure-agent-release-notes/new-relic-infrastructure-agent-1481/).
+
+##  Changed
+
+* chore(deps): update alpine docker tag to v3.21 in [#1958](https://github.com/newrelic/infrastructure-agent/pull/1958)