chore(deps-dev): bump esbuild

Bumps the dev-dependencies group with 1 update in the /packages/claude-plugin directory: [esbuild](https://github.com/evanw/esbuild).


Updates `esbuild` from 0.25.12 to 0.28.0
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG-2025.md)
- [Commits](evanw/esbuild@v0.25.12...v0.28.0)

---
updated-dependencies:
- dependency-name: esbuild
  dependency-version: 0.28.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

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

Author: dependabot[bot]

packages/claude-plugin/package.json

@@ -20,6 +20,6 @@
     "@obsidian-vfs/core": "workspace:*"
   },
   "devDependencies": {
-    "esbuild": "^0.25.0"
+    "esbuild": "^0.28.0"
   }
 }