bug(forge): forge update recursively fetches latest submodules

[emo-eth]

Component

Forge

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (80df71f 2023-09-26T18:05:26.004416000Z)

What command(s) is the bug in?

forge update

Operating System

macOS (Apple Silicon)

Describe the bug

forge update always passes the --recursive flag to the git submodule update command, which recursively fetches the latest commit for every submodule, including submodules inherited by submodules.

This makes deterministic builds difficult with forge update because updating a submodule A means updating all submodule dependencies therein, regardless of whether or not the latest submodule A is using the latest version of submodule B.

--recursive should not be the default, but should be available as a command-line flag.

This is a regression of issue #2264 which was fixed in #2274