fix: bump up runner due to resources (#43722)

## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

## What kind of change does this PR introduce?

Our runners is running out of memory and CPU when running the build.
Just trying to bump up the blacksmith runner so they match the build
machine in Vercel.

.github/workflows/studio-e2e-test.yml

@@ -17,7 +17,7 @@ jobs:
   test:
     name: 'E2E tests'
     timeout-minutes: 60
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     strategy:
       fail-fast: false
       matrix: