[ffigen] Bump coverallsapp/github-action from 1.2.4 to 2.0.0 (#543)

Bumps [coverallsapp/github-action](https://github.com/coverallsapp/github-action) from 1.2.4 to 2.0.0.
- [Release notes](https://github.com/coverallsapp/github-action/releases)
- [Commits](https://github.com/coverallsapp/github-action/compare/50c33ad324a9902697adbf2f92c22cf5023eacf1...67662d24394fd74bffcf7b462d1b432814159afd)

---
updated-dependencies:
- dependency-name: coverallsapp/github-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>

pkgs/ffigen/.github/workflows/test-package.yml

diff --git a/pkgs/ffigen/.github/workflows/test-package.yml b/pkgs/ffigen/.github/workflows/test-package.yml
index 5b3cdee..e1c1ad0 100644
--- a/pkgs/ffigen/.github/workflows/test-package.yml
+++ b/pkgs/ffigen/.github/workflows/test-package.yml
@@ -71,7 +71,7 @@
       - name: Collect coverage
         run: ./tool/coverage.sh
       - name: Upload coverage
-        uses: coverallsapp/github-action@50c33ad324a9902697adbf2f92c22cf5023eacf1
+        uses: coverallsapp/github-action@67662d24394fd74bffcf7b462d1b432814159afd
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           path-to-lcov: lcov.info