Update @supabase/ssr version, add /homepage to redirects array

[dvorakjt]

Checklist

• Include the corresponding Jira issue key and #done in the PR title, like so: "JRA-123 #done Migrate Election Reminders" N/A
• Verify that the code compiles (npm run dev)
• Verify that the project builds (npm run build:local)
• Verify that all tests pass
• Verify that unit tests cover 100% of the code
• Create Storybook stories for visual components N/A
• Verify that any visual components match the Figma N/A
• Test with a screen reader (if applicable) N/A
• Document your code with TSDoc comments
• Format your code with Prettier

Overview

This PR updates the @supabase/ssr version to version 0.5.1 and updates the usage of said package to reflect the latest example provided by the Supabase docs. The original example was causing intermittent 500 errors because cookies were being set in a Server component, which is not allowed in Next.js and throws an exception. The new docs for this package indicate that the logic inside the setAll method provided to createServerClient should be wrapped in a try...catch block to avoid this situation.

Here is a screenshot of the error:

The updated docs can be viewed here.

This PR also adds /homepage to the redirects array in next.config.mjs. /homepage redirects to /. This is necessary because the main 8by8 site (https://8by8.us) contains links to the challenge application. These links currently point to /homepage. Until the main site can be updated, we should redirect users coming from /homepage so that they don't hit our 404 page.

Test Plan

All unit tests pass. I verified that a user visiting /homepage is redirected to /.

Follow ups

We should continue to monitor Vercel logs.