Bump sharp from 0.24.1 to 0.25.1

Bumps [sharp](https://github.com/lovell/sharp) from 0.24.1 to 0.25.1.
- [Release notes](https://github.com/lovell/sharp/releases)
- [Changelog](https://github.com/lovell/sharp/blob/master/docs/changelog.md)
- [Commits](lovell/sharp@v0.24.1...v0.25.1)

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

package.json

@@ -30,7 +30,7 @@
     "ember-cli-babel": "^7.13.0",
     "ember-cli-htmlbars": "^4.2.0",
     "rsvp": "^4.7.0",
-    "sharp": "^0.24.1"
+    "sharp": "^0.25.1"
   },
   "devDependencies": {
     "@ember/optional-features": "^1.1.0",