fix(sourcemap): update sourcemap, remove checker (#7823)
### Description
While debugging
https://vercel.slack.com/archives/C03EWR7LGEN/p1711146825831219?thread_ts=1711143217.892349&cid=C03EWR7LGEN,
found out sourcemap lookup fails on certain source and always returns
synthetictoken only.
Weirdly, the guards in this PR
https://github.com/vercel/turbo/pull/7823/files#diff-2ce67e28c5b3144ec6f7a89167f3c96da9f9e268abf3fd685ce881d75a4cd8a5L319
is preventing those lookup - removing it makes correct sourcemap lookup
occurs. I updated pkg to the version what swc uses and removed + ran
next.js tests, seems like most of tests are running just fine
(https://github.com/vercel/next.js/pull/63624)
Still not 100% sure if this'll be ok or not, if not open to change for
the correct fixes. Some related fixes
https://github.com/getsentry/rust-sourcemap/pull/60 might be the reason
we don't see any regressions in the test.
