fix: snyk issue

Author: aman19K

lib/core/oauthHandler.js

@@ -61,15 +61,18 @@ export default class OAuthHandler {
       const base64String = btoa(String.fromCharCode(...hashArray));
       return base64String.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, ''); // URL-safe Base64
     } else {
-      // Use crypto-browserify in Node.js environment
-      const crypto = require('crypto-browserify');
+    // In Node.js: Use the native `crypto` module for hashing
+      const crypto = require('crypto'); 
+
       const hash = crypto.createHash('sha256');
       hash.update(codeVerifier);
       const hashBuffer = hash.digest();
-      const base64String = hashBuffer.toString('base64');
+
+      // Convert to Base64 and URL-safe Base64
+      let base64String = hashBuffer.toString('base64');
       return base64String.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, ''); // URL-safe Base64
-    }
-  }
+    } 
+}
 
   /**
    * @description Authorize the user by redirecting to the OAuth provider's authorization page