`gleam remove` could invalidate the build cache

[yoshi-monster]

Hi hello!

When removing a dependency with gleam remove, the build cache is not invalidated, so gleam check (and build and run) will continue to report no compile errors until a file in the project has been edited.

Reproduction:

$ gleam new wibble
$ cd wibble
$ gleam run
# ...
Hello from wibble!
$ gleam remove gleam_stdlib
$ gleam run
Hello from wibble!

I thought a dependency in a library was unused and did something similar tot he above to check if the tests still run without the dependency, only to realise that it's actually required after trying to gleam publish.

~ 💜