update codecov action explicitly using Token

Author: bgctw

.github/workflows/CI.yml

@@ -47,8 +47,9 @@ jobs:
         env:
           GROUP: ${{ matrix.group }}
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v5
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}  
           file: lcov.info
   docs:
     name: Documentation