chore(deps-dev): bump start-server-and-test from 1.12.5 to 1.12.6

Bumps [start-server-and-test](https://github.com/bahmutov/start-server-and-test) from 1.12.5 to 1.12.6.
- [Release notes](https://github.com/bahmutov/start-server-and-test/releases)
- [Commits](https://github.com/bahmutov/start-server-and-test/compare/v1.12.5...v1.12.6)

---
updated-dependencies:
- dependency-name: start-server-and-test
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -68,7 +68,7 @@
     "rollup-plugin-postcss": "^4.0.0",
     "rollup-plugin-serve": "^1.1.0",
     "rollup-plugin-typescript2": "^0.30.0",
-    "start-server-and-test": "^1.12.5",
+    "start-server-and-test": "^1.12.6",
     "typescript": "^4.3.4"
   },
   "peerDependencies": {