chore(deps): bump codecov/codecov-action from 4 to 5 (MisskeyIO#819)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4 to 5.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v4...v5)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/test-backend.yml

@@ -74,7 +74,7 @@ jobs:
     - name: Test
       run: pnpm --filter backend test-and-coverage
     - name: Upload to Codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: ./packages/backend/coverage/coverage-final.json
@@ -134,7 +134,7 @@ jobs:
       - name: Test
         run: pnpm --filter backend test-and-coverage:e2e
       - name: Upload to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: ./packages/backend/coverage/coverage-final.json

.github/workflows/test-frontend.yml

@@ -54,7 +54,7 @@ jobs:
     - name: Test
       run: pnpm --filter frontend test-and-coverage
     - name: Upload Coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: ./packages/frontend/coverage/coverage-final.json

.github/workflows/test-misskey-js.yml

@@ -52,7 +52,7 @@ jobs:
           CI: true
 
       - name: Upload Coverage
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: ./packages/misskey-js/coverage/coverage-final.json