feat(gomod): Add gomodSkipVendor postUpdateOption

[r0bobo]

Changes

This PR adds a postUpdateOption gomodSkipVendor which disables automatic vendoring functionality in the gomod manager.

Context

I'm creating this PR because I've had the issue described in:

• Post-upgrade modifications can be dropped #9271

Files that are removed by go mod vendor but are then restored in a postUpgradeTask are not added to the final commit.
After finding this comment in a discussion about go vendoring trouble I took a stab at adding the suggested option.

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[rarkins]

Add a test for this skip case

[r0bobo]

Add a test for this skip case

I added a test that copies the it('supports vendor directory update', ...) case but passes the gomodSkipVendor as well. I started editing the expected output so that the diff would disappear, but I kinda feel like I don't know what I'm doing as I don't understand the testing framework that well. Do you have any pointers on how the test case should look?

[r0bobo]

I've fixed the test so it is now green.

[renovate-release]

🎉 This issue has been resolved in version 37.428.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)
• 37.428.0

Your semantic-release bot 📦🚀