fix: use v4

Author: thomasrockhu-codecov

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
  id-token: write
  steps:
  - name: Checkout
- uses: actions/checkout@v5
+ uses: actions/checkout@v4
  with:
  fetch-depth: 0
  - name: Set up Python 3.11