Bump release-plan from 0.9.2 to 0.16.0

Bumps [release-plan](https://github.com/embroider-build/release-plan) from 0.9.2 to 0.16.0.
- [Release notes](https://github.com/embroider-build/release-plan/releases)
- [Changelog](https://github.com/embroider-build/release-plan/blob/main/CHANGELOG.md)
- [Commits](https://github.com/embroider-build/release-plan/commits)

---
updated-dependencies:
- dependency-name: release-plan
  dependency-version: 0.16.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -44,7 +44,7 @@
     "prettier": "3.3.3",
     "prettier-plugin-astro": "^0.14.1",
     "prettier-plugin-svelte": "^3.3.3",
-    "release-plan": "^0.9.0",
+    "release-plan": "^0.16.0",
     "replace": "^1.2.2",
     "shepherd.js": "workspace:*",
     "svelte": "^4.2.19",