post no-docs comment only the first time

Author: Tofel

.github/workflows/generate-go-docs.yaml

@@ -176,7 +176,10 @@ jobs:
 
       - name: Create comment in the original PR to notify about no new docs
         uses: peter-evans/create-or-update-comment@71345be0265236311c031f5c7866368bd1eff043 # v4.0.0
-        if: steps.create-pr.outputs.pull-request-number == ''
+        # we want to post this warning only, if it is the first time we are running this action on the PR
+        # it is entirely valid to have (some) subsequent commits without new docs as long as at least
+        # one commit introduced changes to public functions without existing comments
+        if: steps.create-pr.outputs.pull-request-number == '' && steps.fc.outputs.comment-id == 0
         with:
           token: ${{ steps.setup-github-token-write.outputs.access-token }}
           issue-number: ${{ github.event.pull_request.number }}

tools/breakingchanges/cmd/main.go

@@ -20,6 +20,10 @@ const (
 	Reset  = "\033[0m"
 )
 
+func SuchABreakingChange() {
+	fmt.Println("This is a breaking change")
+}
+
 func findGoModDirs(rootFolder, subDir string) ([]string, error) {
 	var goModDirs []string