Re-synchronize typography values with UI Kit v6

[julien-deramond]

Description

The aim of this issue is to re-synchronize our typography values and utilities based on the new one defined in the UI Kit v6.

For example, our .display-1 is set to 60px on the desktop and should be 50px.

Sub-tasks

• Double-check that the screenshots are consistent with https://system.design.orange.com/0c1af118d/p/68dbd8-typography/b/27d9ab
• Apply correctly the new values to our typography system
• For each typography utility, check in our documentation and examples that it's still correct. I'm thinking for example of the heading of https://boosted.orange.com/docs/5.3/examples/form/ that should be 50px instead of 60px as newly defined in https://system.design.orange.com/0c1af118d/p/20500e-form/b/16bb53/i/108261203
• Double-check in our components and modules too if it doesn't have any impacts, components such as Title Bars for instance
• Add a migration note that summarizes the impact for the users if any