deps: bump execa from 8.0.1 to 9.5.1 in /benchmarks/gc

Bumps [execa](https://github.com/sindresorhus/execa) from 8.0.1 to 9.5.1.
- [Release notes](https://github.com/sindresorhus/execa/releases)
- [Commits](sindresorhus/execa@v8.0.1...v9.5.1)

---
updated-dependencies:
- dependency-name: execa
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

benchmarks/gc/package.json

@@ -15,7 +15,7 @@
     "aegir": "^45.0.1",
     "blockstore-fs": "^2.0.1",
     "datastore-level": "^11.0.1",
-    "execa": "^8.0.1",
+    "execa": "^9.5.1",
     "helia": "^5.1.1",
     "ipfsd-ctl": "^15.0.0",
     "it-all": "^3.0.4",