build: enabled ESLint curly rule (#429)

## PR Checklist

- [x] Addresses an existing open issue: fixes #425 
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/template-typescript-node-package/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/template-typescript-node-package/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

Runs `--fix` to fix up violations.

Author: JoshuaKGoldberg

.eslintrc.cjs

@@ -126,6 +126,7 @@ module.exports = {
 		"no-inner-declarations": "off",
 
 		// Stylistic concerns that don't interfere with Prettier
+		curly: ["error", "all"],
 		"padding-line-between-statements": "off",
 		"@typescript-eslint/padding-line-between-statements": [
 			"error",

script/setup.js

@@ -44,8 +44,11 @@ async function withSpinner(
 
 	try {
 		const success = await callback();
-		if (success === false) s.stop(chalk.yellow("⚠️ " + warnText));
-		else s.stop(chalk.green("✅ " + successText));
+		s.stop(
+			success === false
+				? chalk.yellow("⚠️ " + warnText)
+				: chalk.green("✅ " + successText)
+		);
 	} catch (error) {
 		s.stop(chalk.red("❌ " + stopText));
 
@@ -609,7 +612,10 @@ try {
 						}
 					);
 				} catch (error) {
-					if (error.status === 403) return false;
+					if (error.status === 403) {
+						return false;
+					}
+
 					throw error;
 				}
 			},