fix: publish canary workflow. add danger rule (#3204)

.github/workflows/publish_canary.yml

@@ -1,4 +1,4 @@
-ame: Publish Canary Image
+name: Publish Canary Image
 on:
   workflow_dispatch:
   push:

dangerfile.ts

@@ -388,3 +388,18 @@ async function checkChangesetFiles() {
   }
 }
 checkChangesetFiles()
+
+// -- Check Workflows ------------------------------------------------------------
+function checkWorkflows() {
+  const updatedWorkflows = updated_files.filter(f => f.includes('.github/workflows/'))
+  const deletedWorkflows = deleted_files.filter(f => f.includes('.github/workflows/'))
+
+  for (const f of deletedWorkflows) {
+    fail(`Workflow file(s) ${f} has been deleted`)
+  }
+
+  for (const f of updatedWorkflows) {
+    warn(`Workflow file ${f} has been modified`)
+  }
+}
+checkWorkflows()