BUGFIX: update allowed float encodings to match XTCE standard

[cgobat]

Checklist

• Changes are fully implemented without dangling issues or TODO items
• Deprecated/superseded code is removed or marked with deprecation warning
  • N/A
• Current dependencies have been properly specified and old dependencies removed
• New code/functionality has accompanying tests and any old tests have been updated to match any new assumptions
• The changelog.md has been updated

This PR resolves the issue I raised in my comment here.

[cgobat]

Could you run tests/CI on this again?

[medley56]

@cgobat I just added you as a Collaborator. You should be able to run the CI tests now.

[greglucas]

Thanks for adding in that soft deprecation of the wrong labels. I think this looks great!

There is one linting fix which you can get locally with ruff --fix space_packet_parser I think.

[greglucas]

@cgobat, thanks! Also as an FYI, we just moved this over to the "lasp" GitHub organization, so you may want to update your upstream location when pulling/rebasing.