Incorrect line numbers in "mint validate" findings (CLI version 4.2.454)

[fweikert]

Hey,

I recently upgraded the mint CLI to version 4.2.454 (client version 0.0.2727).
However, I noticed that errors found by mint validate now contain incorrect line numbers.

Example:

Running mint validate in https://github.com/fweikert/bazel/tree/mint_bug/docs/versions/8.6.0/docs leads to

parsing error ./cc-toolchain-config-reference.mdx:614:5 - Expected a closing tag for `<inc1>` (614:62-614:68) before the end of `paragraph`

However, the <inc1> snippet is actually on line 586.