Produce a Sass compile warning if a defunct organisation is being referenced, with information on the
new/replacement organisation.

Renames property in colour map from 'colour-websafe' to 'contrast-safe'.

Renames parameter on govuk-organisation-colour from `$websafe` to `$contrast-safe`. The old parameter name still works but is now deprecated.

Prettier configuration has been updated since these changes were originally made

Updates the organisation colours based on draft brand documents provided by Design102. These colours likely do not match the specific shades
used within departments and their own design systems, but they are based on the most authoritative source we have currently.

The exceptions to this are:
- DSIT, which Design102 has yet to provide a specific colour for. The colour used here is derived from the one used on DSIT's public-facing
comms instead.
- DESNZ, which we also do not have a prescribed coloru for. The colour here is also from public-facing comms.
- Home Office, which provisionally uses the colour from the HO Design System rather than the draft identity guidelines.
- Prime Minister's Office, which uses the off-black from GOV.UK instead of the pure black from the draft identity guidelines.

Re-add and deprecate `colour-websafe`. We still want to rename it, but this is to avoid a breaking change in the mean time.

- Update review app example for 2024 MOG change
- Rename organisation colour test to match what is actually being tested
- Move incorrectly located changelog entry