Slash as Division SASS Deprecation

[britannio]

Bug Report

What is the issue?

https://sass-lang.com/documentation/breaking-changes/slash-div
The deprecated division operator is being used in SASS files thus producing a series of warnings.

A migration tool is available to fix this issue: https://sass-lang.com/documentation/breaking-changes/slash-div#automatic-migration

What steps are required to reproduce the issue?

What was the environment where this issue occurred?

• Device:
• Operating System:
• Browser:
• Browser version:
• NHS.UK frontend package version:
• Node version:
• npm version:

Is there anything else you think would be useful in recreating the issue?

[SamNHS]

This will also need an update to the package.json as it is currently "sass": "^1.32.11" and math.div requires sass 1.33 or later

[colinrotherham]

Looks like this one was completed in 7f557f0

We've also made wider user of math.div() and math.percentage() in a671e04 and others in:

• Downgrade Sass to 1.77.5 and fix as many deprecations as possible #1064