Meta: update metadata for ES2023

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "ipr-check": "node scripts/check-form tc39/ecma262 HEAD --all",
     "prebuild-spec": "git remote rm travis-origin 2>/dev/null ; git remote add travis-origin \"git@github.com:${TRAVIS_REPO_SLUG:-tc39/ecma262}.git\" && git fetch --quiet travis-origin",
-    "build-spec": "YEAR=2022 && git checkout --quiet \"es${YEAR}\" && mkdir -p \"out/${YEAR}\" && cp -R img \"out/${YEAR}\" && ecmarkup --verbose spec.html \"out/${YEAR}/index.html\" --css \"out/${YEAR}/ecmarkup.css\" --js \"out/${YEAR}/ecmarkup.js\" && git checkout --quiet travis-origin/test-travis",
+    "build-spec": "YEAR=2023 && git checkout --quiet \"es${YEAR}\" && mkdir -p \"out/${YEAR}\" && cp -R img \"out/${YEAR}\" && ecmarkup --verbose spec.html \"out/${YEAR}/index.html\" --css \"out/${YEAR}/ecmarkup.css\" --js \"out/${YEAR}/ecmarkup.js\" && git checkout --quiet travis-origin/test-travis",
     "postbuild-spec": "git remote rm travis-origin",
     "build-head": "npm run build-only -- --lint-spec --strict",
     "prebuild-only": "npm run clean && mkdir out && cp -R img out",

spec.html

@@ -54,8 +54,9 @@
 <pre class="metadata">
   title: ECMAScript&reg; 2023 Language&nbsp;Specification
   shortname: ECMA-262
-  status: draft
-  location: https://tc39.es/ecma262/
+  status: standard
+  date: 2023-03-30
+  location: https://tc39.es/ecma262/2023/
   markEffects: true
 </pre>
 <p><img src="img/ecma-logo.svg" id="ecma-logo"></p>