Update checkout action for Node 24

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Install Vim
         timeout-minutes: 5
@@ -61,7 +61,7 @@ jobs:
   shellcheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Check test runner CLI
         run: |
           scripts/test.sh --help
@@ -72,7 +72,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install markdownlint
         run: npm install -g markdownlint-cli
       - name: Lint Markdown

CHANGELOG.md

@@ -52,6 +52,8 @@
 
 ### Fixed
 
+- GitHub Actions now uses `actions/checkout@v5`, avoiding the Node.js 20
+  deprecation warning on PR checks
 - `diffopt` enhancements now degrade safely on macOS system Vim builds that
   report the required patch level but reject individual diff options
 - Installer system-tool reporting now still detects already-installed tools on