fix: don't log ignored error when requiring custom publisher

[George-Payne]

When using a custom publish provider, it is first attempted to be imported from the build resources, then if that fails, it attempts to import it from node_modules.

Currently, if the first attempted path fails, it logs the error to the console.

This happens multiple times per publish, and adds a lot of noise to the output.

Considering it's a (possibly) expected error, it would be better to move this to a debug log, with explanation.

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🦋 Changeset detected

Latest commit: 318cdd5517a0854e0d6395e301a6a0154b8f5912

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 8 packages

| Name | Type | | --------------------------------- | ----- | | app-builder-lib | Patch | | dmg-builder | Patch | | electron-builder-squirrel-windows | Patch | | electron-builder | Patch | | electron-forge-maker-appimage | Patch | | electron-forge-maker-nsis-web | Patch | | electron-forge-maker-nsis | Patch | | electron-forge-maker-snap | Patch |

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