Bump @embroider/addon-dev from 8.1.0 to 8.1.2

Bumps [@embroider/addon-dev](https://github.com/embroider-build/embroider/tree/HEAD/packages/addon-dev) from 8.1.0 to 8.1.2.
- [Release notes](https://github.com/embroider-build/embroider/releases)
- [Changelog](https://github.com/embroider-build/embroider/blob/main/CHANGELOG.md)
- [Commits](https://github.com/embroider-build/embroider/commits/HEAD/packages/addon-dev)

---
updated-dependencies:
- dependency-name: "@embroider/addon-dev"
  dependency-version: 8.1.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -57,7 +57,7 @@
     "@babel/plugin-proposal-decorators": "^7.28.0",
     "@babel/plugin-transform-class-static-block": "^7.28.3",
     "@babel/runtime": "^7.28.4",
-    "@embroider/addon-dev": "^8.1.0",
+    "@embroider/addon-dev": "^8.1.2",
     "@embroider/compat": "^4.1.10",
     "@embroider/core": "^4.2.9",
     "@glint/core": "^1.2.0",