API request body size limit increase

[epipav]

Changes proposed ✍️

Some github webhook body payloads have a size > 100kb - These webhooks were failing because of the default body size limit coming from the bodyParser. This size is now increased to 5MB

What

🤖 Generated by Copilot at 0bd1fbf

Increase API request body size limit for image uploads. Modify backend/src/api/index.ts to use bodyParser middleware with 5mb limit for JSON and URL-encoded requests.
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🤖 Generated by Copilot at 0bd1fbf

We are the creators of the new world order
We defy the limits of the bodyParser
We unleash the power of the image upload
We are the masters of the JSON and URL-encoded

Why

How

🤖 Generated by Copilot at 0bd1fbf

• Increase the maximum request body size for JSON and URL-encoded requests to 5mb to support image uploading (link, link) in backend/src/api/index.ts

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screehshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.