Convert datadog-agent.yaml to datadog-agent-7.72.yaml:

• epoch bumped
• tag filter updated to 7.72.

Pre-review Checklist

For new version streams

• The upstream project actually supports multiple concurrent versions.
  • No, this project only supports latest
• Any subpackages include the version string in their package name (e.g. name: ${{package.name}}-compat)
  • Any subpackages that couldn't use package.name due to naming use the major-minor-version variable
• The package (and subpackages) provides: logical unversioned forms of the package (e.g. nodejs, nodejs-lts)
  • s6-overlay is the only exception as no-provides: true was present for this subpackage in the original config
• If non-streamed package names no longer built, open PR to withdraw them (see WITHDRAWING PACKAGES)