Enable linter in tests

package.json

@@ -10,7 +10,7 @@
   "scripts": {
     "test": "forge test",
     "prepare": "husky",
-    "lint": "solhint \"contracts/**/*.sol\" --ignore-path .solhintignore",
+    "lint": "solhint \"contracts/**/*.sol\" \"test/**/*.sol\" --ignore-path .solhintignore",
     "coverage": "forge coverage",
     "precov-report": "mkdir -p ./coverage-report && forge coverage --report lcov --report-file ./coverage-report/lcov.info",
     "cov-report": "genhtml ./coverage-report/lcov.info --rc derive_function_end_line=0 --rc branch_coverage=1 -o coverage-report --exclude test --ignore-errors inconsistent --ignore-errors category"