[chore] pin markdown-link-check (#11719)

This is pinned because of
tcort/markdown-link-check#369

Signed-off-by: Alex Boten <[email protected]>

Author: codeboten

package.json

@@ -1,5 +1,5 @@
 {
   "devDependencies": {
-    "markdown-link-check": "3.13.6"
+    "markdown-link-check": "3.12.2"
   }
 }