Build failing due to serverless function maximum size limit

[bddicken]

Description

I am working on adding some new pages to a site that we deploy using Vercel. The site deploys just fine on our main branch. I created a branch of our site, added a few components and markdown files, made a few code edits, and then push to Vercel. However, the Vercel build fails with:

Error: The Serverless Function "sync/resources" is 1.08gb which exceeds the maximum size limit of 300mb. Learn More: https://vercel.link/serverless-function-size

Earlier up in the logs I see:

...

Warning: Max serverless function size of 250 MB uncompressed reached
--
11:21:51.528 | Serverless Function's page: learn/articles/[slug].js
11:21:51.538 | Large Dependencies            Uncompressed size
11:21:51.538 | .next/cache/webpack                     1.56 GB
11:21:51.539 | .git/objects/pack                     406.11 MB
11:21:51.539 | public/assets/blog                    276.14 MB
11:21:51.539 | public/assets/docs                     61.27 MB
...

However, I'm not sure why these large dependencies are being included here but not on main. I did not add any additional packages or dependencies on my working branch. When I run vercel build locally it builds successfully, but I do get this warning, which is probably related:

WARNING: You should not upload the `.next` directory.

I did not make any changes explicitly ask it to include .next. Anyone else experienced this? Pointers in the right direction?