Update RELEASE notes, minor fixes

[iameskild]

Reference Issues or PRs

closes #2037
closes #2058
closes #2081

What does this implement/fix?

Put a x in the boxes that apply

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

• Did you test the pull request locally?
• Did you add new tests?

Any other comments?

[fangchenli]

The CI failures are unrelated. I'm seeing those in all my recent PRs.

[fangchenli]

nebari/src/nebari/schema.py

Lines 89 to 90 in 056b420

	if len(project_name) > 16:
	project_name = project_name[:16]

This can be removed.