build(workflow): update coverage reporting tool and clean up permission comments

Bumped codecov action from previous major version to latest release.
Removed inline documentation for pull request permissions to maintain
cleaner workflow configuration.

Author: z0ffy

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 
 permissions:
   contents: read
-  pull-requests: write  # 用于 PR 评论（如测试覆盖率报告）
+  pull-requests: write
 
 jobs:
   lint:
@@ -64,7 +64,7 @@ jobs:
 
       - name: Upload coverage reports
         if: matrix.node-version == '20'
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: false