Fixed sync-i18n script not working anymore

This is caused by the typescript 4.4 update that changed the catch type from any to unknown

Author: alexandrevryghem

scripts/sync-i18n-files.ts

@@ -275,7 +275,9 @@ function readFileIfExists(pathToFile) {
     try {
       return fs.readFileSync(pathToFile, 'utf8');
     } catch (e) {
-      console.error('Error:', e.stack);
+      if (e instanceof Error) {
+        console.error('Error:', e.stack);
+      }
     }
   }
   return null;