Bump actions/upload-artifact from 2 to 3 (#2778)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  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/ci.yml

@@ -101,7 +101,7 @@ jobs:
           fail_ci_if_error: true
           verbose: true
       - name: Store coverage test output
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: opentelemetry-go-test-output
           path: ${{ env.TEST_RESULTS }}