feat: Move 'betterr' from devDependencies to dependencies

The 'betterr' package was previously listed under devDependencies in
package.json. This commit moves it to the dependencies section,
reflecting its role in the production environment. The change is also
reflected in the pnpm-lock.yaml file.

Author: ryoppippi

package.json

@@ -32,6 +32,7 @@
 		"release": "nr typecheck && nr test run && nr build && nlx publint && nlx bumpp && npm publish"
 	},
 	"dependencies": {
+		"betterr": "^5.1.0",
 		"camelcase-keys": "^9.1.3",
 		"defu": "^6.1.4",
 		"knitwork": "^1.1.0",
@@ -50,7 +51,6 @@
 		"@ryoppippi/eslint-config": "npm:@jsr/ryoppippi__eslint-config",
 		"@sveltejs/kit": "^2.5.20",
 		"@types/node": "^22.1.0",
-		"betterr": "^5.1.0",
 		"eslint": "^9.8.0",
 		"eslint-plugin-format": "^0.1.2",
 		"eslint-plugin-svelte": "^2.43.0",