Bump icanhazstring/composer-unused

Bumps the tools_composer_dependencies group in /tools/10_composer with 1 update: [icanhazstring/composer-unused](https://github.com/composer-unused/composer-unused).


Updates `icanhazstring/composer-unused` from 0.9.2 to 0.9.3
- [Release notes](https://github.com/composer-unused/composer-unused/releases)
- [Changelog](https://github.com/composer-unused/composer-unused/blob/main/CHANGELOG.md)
- [Commits](composer-unused/composer-unused@0.9.2...0.9.3)

---
updated-dependencies:
- dependency-name: icanhazstring/composer-unused
  dependency-version: 0.9.3
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: tools_composer_dependencies
...

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

Author: dependabot[bot]

tools/10_composer/composer.json

@@ -7,7 +7,7 @@
 	},
 	"require-dev": {
 		"ergebnis/composer-normalize": "2.47.0",
-		"icanhazstring/composer-unused": "0.9.2",
+		"icanhazstring/composer-unused": "0.9.3",
 		"maglnet/composer-require-checker": "4.16.1",
 		"roave/security-advisories": "dev-latest"
 	},