ci: bump codecov action to v7

Author: Irfan Ahmad

.github/workflows/validate.yml

@@ -33,7 +33,7 @@ jobs:
         path: coverage
         merge-multiple: true
     - name: Upload coverage
-      uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
+      uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
       with:
         fail_ci_if_error: true
         token: ${{ secrets.CODECOV_TOKEN }}