feat(ci): apidiff-go v2

[erikburt]

Changes

• Analyze all changed modules dynamically via changed-modules-go/v1 and apidiff-go/v2

Notes

This is a step towards being able to recommend versions for these modules.

Also v2 addresses 3 formatting problems:

• Remove bolded types (DX-2308)
• Better handling for trailing commas with new function parameters (DX-2304)
• Include compatible changes in PR comment (DX-2305)

New Behaviour

• This will run against every module that has changed, not only root
• Comments on PRs will be separate on a per-module basis

Example

1. No modules changed (this PR): https://github.com/smartcontractkit/chainlink-common/actions/runs/20183018286/job/57947430245?pr=1734
2. 2 modules changed:
   • test: apidiff-go v2 #1735
   • https://github.com/smartcontractkit/chainlink-common/actions/runs/20183155201?pr=1735

---

DX-2304, DX-2305, DX-2308

[Copilot]

Pull request overview

This PR upgrades the API diff workflow to v2, enabling dynamic analysis of all changed Go modules rather than just the root module. The workflow now uses changed-modules-go/v1 to detect which modules have changes and runs apidiff-go/v2 against each one separately, with improved formatting and support for compatible changes in PR comments.

Key changes:

• Added a new changed-modules job to dynamically detect modules with changes using file patterns for Go files and modules
• Converted the single root-module job into a matrix-based analyze-api-changes job that runs per changed module
• Updated actions to newer versions (checkout@v5, apidiff-go/v2) with adjusted configuration

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.