chore(deps): update commitlint monorepo to v12

Author: renovate-bot

package.json

@@ -47,8 +47,8 @@
     "sourcegraph": ">=24.8.0"
   },
   "devDependencies": {
-    "@commitlint/cli": "^11.0.0",
-    "@commitlint/config-conventional": "^11.0.0",
+    "@commitlint/cli": "^12.0.1",
+    "@commitlint/config-conventional": "^12.0.1",
     "@sourcegraph/eslint-config": "^0.22.0",
     "@sourcegraph/prettierrc": "^2.2.0",
     "@sourcegraph/tsconfig": "^4.0.1",