Run Cron on IDF v5.1

Author: me-no-dev

Diff for: .github/workflows/cron.yml

@@ -20,7 +20,7 @@ jobs:
 
     strategy:
       matrix:
-        idf_branch: [release/v4.4] #, release/v3.3]
+        idf_branch: [release/v5.1, release/v4.4] #, release/v3.3]
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies