Make linting failures appear as failure

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

packages/infrastructure/eslint-config/bin/lint

@@ -8,7 +8,9 @@ const shouldDoTheFix = argv.includes('--fix');
 try {
   execSync(`eslint ${shouldDoTheFix ? "--fix " : " "}--ext ts,tsx --max-warnings=0 .`);
 } catch (error) {
-  console.log(error.stdout.toString());
+  console.error(error.stdout.toString());
+
+  process.exit(1);
 }
 
 try {