fixes llms (#249)

Author: albertov19

.github/workflows/check-llms.yml

@@ -21,6 +21,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install pyyaml requests
 
       - name: Get SHA256 hash of the PR's llms.txt file
         id: pr_llms_hash