relax gleam_http dependency

[CrowdHailer]

This is needed for me to depend on hex.
Also builds on this PR MystPi/conversation#5 to relax the same dependency in conversation

[graphiteisaac]

Seconding a desire for this, would love to have it!

[MystPi]

Hmm, it looks like I'm not able to publish the package since gleam_http is still stuck at v3.7.2 and that version depends on removed types from the gleam/dynamic package. If I change the requirement to gleam_http = "4.0.0" I get this error (I don't know what to make of it):

error: Dependency resolution failed

An error occurred while determining what dependency packages and
versions should be downloaded.
The error from the version resolver library was:

An unrecoverable error happened while solving dependencies: gleam_http is
specified with the requirement `>= 4.0.0`, but it is locked to 3.7.2, which
is incompatible.

Not sure what it means for a package to be locked. Any ideas?

[CrowdHailer]

Have you run gleam update after changing the gleam_http requirement

[MystPi]

Ah, that did it! I always forget to run that command, haha.