fix failed nightly build

https://github.com/antonbabenko/pre-commit-terraform/actions/runs/15473791768

 Invalid workflow file: .github/workflows/scheduled-runs.yml#L41
The workflow is not valid. .github/workflows/scheduled-runs.yml (Line: 41, Col: 22): Invalid secret, CODECOV_TOKEN is not defined in the referenced workflow.

Author: MaxymVlasov

.github/workflows/ci-cd.yml

@@ -10,6 +10,9 @@ on:
     - pre-commit-ci-update-config  # pre-commit.ci always creates a PR
   pull_request:
   workflow_call:  # a way to embed the main tests
+    secrets:
+      CODECOV_TOKEN:
+        required: true
 
 permissions:
   contents: read