build(deps): Bump protobufjs

Bumps [protobufjs](https://github.com/protobufjs/protobuf.js) from 7.5.5 to 7.5.6.
- [Release notes](https://github.com/protobufjs/protobuf.js/releases)
- [Changelog](https://github.com/protobufjs/protobuf.js/blob/protobufjs-v7.5.6/CHANGELOG.md)
- [Commits](protobufjs/protobuf.js@protobufjs-v7.5.5...protobufjs-v7.5.6)

---
updated-dependencies:
- dependency-name: protobufjs
  dependency-version: 7.5.6
  dependency-type: direct:production
...

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

Author: dependabot[bot]

examples/bug-detectors/prototype-pollution/package.json

@@ -4,7 +4,7 @@
 	"main": "fuzz.js",
 	"license": "ISC",
 	"dependencies": {
-		"protobufjs": "7.5.5"
+		"protobufjs": "7.5.6"
 	},
 	"scripts": {
 		"fuzz": "jazzer fuzz -i protobufjs -i fuzz -e nothing --timeout=60000 -x Error -- -runs=1000000 -print_final_stats=1 -use_value_profile=1 -rss_limit_mb=10000 -dict=userDict.txt",