refactor: remove test files and update package.json to exclude jest

Author: srajasimman

.github/workflows/build-publish.yml

@@ -25,9 +25,6 @@ jobs:
 
       - name: Install dependencies
         run: npm ci
-      
-      - name: Run tests
-        run: npm test
 
       - name: Build the action
         run: npm run build

__tests__/commit-message-validator.test.js

@@ -20,7 +20,6 @@
     "@actions/github": "^6.0.0"
   },
   "devDependencies": {
-    "@vercel/ncc": "^0.36.1",
-    "jest": "^29.5.0"
+    "@vercel/ncc": "^0.36.1"
   }
 }