Update FollowTheProcess/ci action to v4 (#198)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/CI.yml

@@ -17,4 +17,4 @@ jobs:
     name: CI
     permissions:
       contents: read
-    uses: FollowTheProcess/ci/.github/workflows/Go.yml@v3
+    uses: FollowTheProcess/ci/.github/workflows/Go.yml@v4