ci: update codecov action

Author: oknozor

.github/workflows/CI.yml

@@ -31,10 +31,11 @@ jobs:
         run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v5
         with:
           files: lcov.info
           fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   lints:
     name: Lints & Format