GAUD-695 - Use new release token

[svanherk]

The brightspace-bot and D2L_GITHUB_TOKEN are no longer needed for release workflows. Instead, we have a new D2L_RELEASE_TOKEN that has the ability to bypass the repo ruleset (configured in https://github.com/Brightspace/repo-settings/pull/1582) and org-level ruleset.

Before merging, I will:

• Confirm the new ruleset matches the old branch protection rule before deleting it
• Remove brightspace-bot as a repo contributor
• Confirm the D2L_RELEASE_TOKEN is available and remove this repo's access to D2L_GITHUB_TOKEN

If you need to make a cert or hotfix, this will need to be backported to the 20.24.02 and 20.24.01 release branches.

[d2l-github-release-tokens[bot]]

:tada: This PR is included in version 1.7.0 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

Your semantic-release bot :package::rocket: