Meta: update repository files

.github/workflows/build.yml

@@ -14,15 +14,15 @@ 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"
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@v4
       with:
-        node-version: 18
+        node-version: 20
     - run: npm install
     - run: pip install bikeshed && bikeshed update
     # Note: `make deploy` will do a deploy dry run on PRs.

.gitignore

@@ -2,3 +2,4 @@
 /deploy.sh
 /index.html
 /node_modules/
+/package-lock.json

PULL_REQUEST_TEMPLATE.md

@@ -1,6 +1,8 @@
 <!--
 Thank you for contributing to the Web IDL 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.
 -->