docs: Add release notes for 2.4.7 (#4203)

* docs: Add release notes for 2.4.7

* Remove internal changes

* Remove WIP Ranker note

* Update 2.4.7.md

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Co-authored-by: robot-ci-heartex <robot-ci-heartex@users.noreply.github.com>
Co-authored-by: Nick Skriabin <767890+nicholasrq@users.noreply.github.com>
Co-authored-by: Nate Kartchner <nate.kartchner@gmail.com>