fix: latest-linux-arm64.yml filename

Author: matthme

scripts/extend-deb-postinst.mjs

@@ -120,4 +120,8 @@ latestYaml.files = files;
 console.log('\n\nsha512: ', sha512);
 console.log('\n\nlatestYaml after modification: ', latestYaml);
 
-fs.writeFileSync('latest-linux.yml', yaml.dump(latestYaml, { lineWidth: -1 }), 'utf-8');
+fs.writeFileSync(
+  `latest-linux${arch === 'arm64' ? '-arm64' : ''}.yml`,
+  yaml.dump(latestYaml, { lineWidth: -1 }),
+  'utf-8'
+);