chore(deps): bump next from 15.5.2 to 15.5.4

Bumps [next](https://github.com/vercel/next.js) from 15.5.2 to 15.5.4.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/compare/v15.5.2...v15.5.4)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.5.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -22,7 +22,7 @@
 	},
 	"dependencies": {
 		"@fluentui/react-icons": "^2.0.311",
-		"next": "^15.5.2",
+		"next": "^15.5.4",
 		"nodemailer": "^7.0.6",
 		"pdf-lib": "^1.17.1",
 		"react": "^19.1.1",