CI: windows-2025 runner (#6632)

* `windows-2025` runner

* Install NSIS

* fix naming

.github/workflows/desktop-build.yml

@@ -310,7 +310,7 @@ jobs:
 
           - os: Windows
             target: 10
-            runner: windows-2022
+            runner: windows-2025
             type: Release
             make_package: 1
             package_suffix: "-Win10"
@@ -410,6 +410,11 @@ jobs:
           modules: ${{matrix.qt_modules}}
           cache: true
 
+      - name: Install NSIS
+        if: matrix.os == 'Windows'
+        shell: bash
+        run: choco install nsis
+
       - name: Setup vcpkg cache
         id: vcpkg-cache
         uses: TAServers/vcpkg-cache@v3