Bump actions back to v6

Author: vrza

.github/workflows/build.yml

@@ -15,17 +15,6 @@ jobs:
         virtual-environment: [ubuntu-latest, windows-2025, ubuntu-24.04-arm]
         node: [18, 20, 22, 24, latest]
         nan-version: [nan-earliest, nan-latest]
-        include:
-          - virtual-environment: macos-latest
-            node: 18
-          - virtual-environment: macos-latest
-            node: 20
-          - virtual-environment: macos-latest
-            node: 22
-          - virtual-environment: macos-latest
-            node: 24
-          - virtual-environment: macos-latest
-            node: latest
 
     runs-on: ${{ matrix.virtual-environment }}
 
@@ -34,14 +23,11 @@ jobs:
       if: matrix.virtual-environment == 'windows-2025'
       run: git config --global core.autocrlf false
 
-    - name: Check Python version
-      run: python --version
-
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Setup Node.js ${{ matrix.node }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ matrix.node }}