chore: update docs for new Redwood.3 release

[cmltaWt0]

Redwood.3 release update. This points latest release to Redwood.

See: https://openedx.atlassian.net/wiki/spaces/COMM/pages/19662426/Process+to+Create+an+Open+edX+Release#4b.-Make-the-new-release-notes-the-%E2%80%9Clatest%E2%80%9D

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[sarina]

Is there anything that should go in the release notes about these changes? I haven't kept track of what is in them.

[sarina]

@cmltaWt0 ping on my question here

[cmltaWt0]

@sarina Let me collect the changes. Will do this today.

[cmltaWt0]

There are no valuable updates in the release except this one:

Remove new library button if user does not have create access for v1 libraries.

A full diff can be found: https://discuss.openedx.org/t/redwood-3-has-been-tagged/14212

[cmltaWt0]

Going to merge this PR.
@feoh do we have something specific for the Redwood.3 to add?

[feoh]

Not that I'm aware of.