Remove npm-windows-upgrade steps as they are no longer needed with Node.js 20

.github/workflows/test.yml

@@ -35,14 +35,7 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node }}
-    # Ensure PowerShell execution policy is unrestricted for npm upgrade
-    - name: Set PowerShell Execution Policy
-      run: |
-        Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
-      shell: pwsh
-    - run: |
-        npm install npm-windows-upgrade --location=global
-        npm-windows-upgrade --npm-version latest
+    # Node.js 20 already includes a recent npm version, so npm upgrade is not needed
     - run: |
         npm ci
         npm run all
@@ -89,12 +82,7 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node }}
-    # https://stackoverflow.com/questions/72401421/message-npm-warn-config-global-global-local-are-deprecated-use-loc
-    - run: |
-        Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
-        npm install npm-windows-upgrade --location=global
-        npm-windows-upgrade --npm-version latest
-      shell: pwsh
+    # Node.js 20 already includes a recent npm version, so npm upgrade is not needed
     - uses: ./
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}