devd: backport go modules to drop dep dependency

[cho-m]

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Potential way to re-deprecate dep -- #106902

Alternative (or in addition), we could deprecate devd.

[SMillerDev]

Could we ask for a release upstream?

[cho-m]

We requested one ~1.5 years ago (cortesi/devd#115) and upstream hasn't responded. Last commit was from 2020.

So, if we need a new release, then rather than us continuing to stall on upstream response, we may as well deprecate now.

[carlocab]

Let's merge this and deprecate.

[MikeMcQuaid]

👍🏻 to merge and deprecate.

[BrewTestBot]

🤖 A scheduled task has triggered a merge.