build(deps): bump playwright and @playwright/test

Bumps [playwright](https://github.com/microsoft/playwright) to 1.56.1 and updates ancestor dependency [@playwright/test](https://github.com/microsoft/playwright). These dependencies need to be updated together.


Updates `playwright` from 1.53.1 to 1.56.1
- [Release notes](https://github.com/microsoft/playwright/releases)
- [Commits](microsoft/playwright@v1.53.1...v1.56.1)

Updates `@playwright/test` from 1.53.1 to 1.56.1
- [Release notes](https://github.com/microsoft/playwright/releases)
- [Commits](microsoft/playwright@v1.53.1...v1.56.1)

---
updated-dependencies:
- dependency-name: playwright
  dependency-version: 1.56.1
  dependency-type: indirect
- dependency-name: "@playwright/test"
  dependency-version: 1.56.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package-lock.json

@@ -34,7 +34,7 @@
   "devDependencies": {
     "@11ty/eleventy": "^3.1.1",
     "@11ty/eleventy-plugin-rss": "^2.0.4",
-    "@playwright/test": "^1.53.1",
+    "@playwright/test": "^1.56.1",
     "@types/node": "^24.0.7",
     "autoprefixer": "^10.4.21",
     "postcss": "^8.5.5",