Update validate.yml

pkgs/lints/.github/workflows/validate.yml

diff --git a/pkgs/lints/.github/workflows/validate.yml b/pkgs/lints/.github/workflows/validate.yml
index a3ea9f8..09461b0 100644
--- a/pkgs/lints/.github/workflows/validate.yml
+++ b/pkgs/lints/.github/workflows/validate.yml
@@ -11,6 +11,10 @@
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
 
+  # Run weekly
+  schedule:
+    - cron: "0 0 * * 0"
+
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   build: