update action versions

Author: aligneddev

.github/workflows/ci.yaml

@@ -26,15 +26,15 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup .NET from global.json
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           global-json-file: global.json
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 24
           cache: npm