Release 1.4.5

[ni-jfitzger]

• This contribution adheres to CONTRIBUTING.md.
• I've updated CHANGELOG.md if applicable.
• [ ] I've added tests applicable for this pull request

Notes:

• In previous releases, there was only 1 LATEST_RELEASE file. As part of Split the docs #1963 it was split into individual files for each api, in preparation for independently versioned packages and docs.
• docs/conf.py is for the old Read the Docs project. The .dev0 has been dropped and a 1.4.5 version will be added to the project upon release (just so we don't display a .dev0 in the page description at the top). It will be a simple page of redirects like we currently show for latest/master. After release, we will remove the files used to build the project. See Stop publishing documentation to old nimi-python readthedocs project. #1978.

What does this Pull Request accomplish?

Release 1.4.5. See CHANGELOG.md for list of changes.

List issues fixed by this Pull Request below, if any.

None

What testing has been done?

PR Checks