chore(deps-dev): bump karma in /samples/lib/spa-angular-client

Bumps [karma](https://github.com/karma-runner/karma) from 6.4.2 to 6.4.3.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma@v6.4.2...v6.4.3)

---
updated-dependencies:
- dependency-name: karma
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

samples/lib/spa-angular-client/package.json

@@ -51,7 +51,7 @@
     "codelyzer": "^6.0.2",
     "jasmine-core": "~5.1.1",
     "jasmine-spec-reporter": "~7.0.0",
-    "karma": "~6.4.2",
+    "karma": "~6.4.3",
     "karma-chrome-launcher": "~3.2.0",
     "karma-coverage-istanbul-reporter": "~3.0.3",
     "karma-jasmine": "~5.1.0",