Update financial incentives

[gms-gs]

Context

We need to update the financial incentives for the new year

Changes proposed in this pull request

Update the values via a migration

Guidance to review

• Visit find and view secondary subjects

Things to check

• This code does not rely on migrations in the same Pull Request
• If this code includes a migration adding or changing columns, it also backfills existing records for consistency
• If this code adds a column to the DB, decide whether it needs to be in analytics yml file or analytics blocklist
• API release notes have been updated if necessary
• Required environment variables have been updated added to the Azure KeyVault
• Inform data insights team due to database changes
• Make sure all information from the Trello card is in here
• Rebased main
• Cleaned commit history
• Tested by running locally
• Attach PR to Trello card

[gms-gs]

Find: Prepare for and update Financial Incentives for 2024-25 recruitment cycle