Meta: link Simplified Chinese translation

Also pull in some recent whatwg/spec-factory changes while here.

Closes #239.

.github/workflows/build.yml

@@ -14,10 +14,10 @@ jobs:
     name: Build
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 2
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: "3.11"
     - run: pip install bikeshed && bikeshed update

PULL_REQUEST_TEMPLATE.md

@@ -1,6 +1,8 @@
 <!--
 Thank you for contributing to the Fullscreen API Standard! Please describe the change you are making and complete the checklist below if your change is not editorial.
-When editing this comment after the PR is created, check that PR-Preview doesn't overwrite your changes.
+
+When you submit this PR, and each time you edit this comment (including checking a checkbox through the UI!), PR Preview will run and update it. As such make any edits in one go and only after PR Preview has run.
+
 If you think your PR is ready to land, please double-check that the build is passing and the checklist is complete before pinging.
 -->
 

fullscreen.bs

@@ -6,6 +6,7 @@ Text Macro: TWITTER fullscreenapi
 Text Macro: LATESTRD 2024-07
 Abstract: The Fullscreen API standard defines an API for elements to display themselves fullscreen.
 Translation: ja https://triple-underscore.github.io/fullscreen-ja.html
+Translation: zh-Hans https://htmlspecs.com/fullscreen/
 Markup Shorthands: css no
 </pre>