Bump @fontsource/open-sans from 5.0.27 to 5.0.28 in /commafeed-client

Bumps [@fontsource/open-sans](https://github.com/fontsource/font-files/tree/HEAD/fonts/google/open-sans) from 5.0.27 to 5.0.28.
- [Changelog](https://github.com/fontsource/font-files/blob/main/fonts/google/open-sans/CHANGELOG.md)
- [Commits](https://github.com/fontsource/font-files/commits/HEAD/fonts/google/open-sans)

---
updated-dependencies:
- dependency-name: "@fontsource/open-sans"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

commafeed-client/package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@emotion/react": "^11.11.4",
-    "@fontsource/open-sans": "^5.0.27",
+    "@fontsource/open-sans": "^5.0.28",
     "@lingui/core": "^4.10.0",
     "@lingui/macro": "^4.10.0",
     "@lingui/react": "^4.10.0",