ci: bump actions/checkout and actions/setup-node from v4 to v5 (#55)

Node.js 20 actions are deprecated and will be forced to Node 24
starting June 2026.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: designcode

.github/workflows/ci.yaml

@@ -14,10 +14,10 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v5
         with:
           node-version: '22'
       - run: npm ci
@@ -31,10 +31,10 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v5
         with:
           node-version: '22'
       - run: npm ci

.github/workflows/release.yaml

@@ -21,12 +21,12 @@ jobs:
 
     steps:
       # Checkout code with full history to get tags
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       # Set up Node.js
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v5
         with:
           node-version: '22'
 
@@ -60,11 +60,11 @@ jobs:
 
     steps:
       # Checkout the release tag
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           ref: v${{ needs.release.outputs.new_release_version }}
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v5
         with:
           node-version: '22'