Fix missing version for setup-ninja

Author: scheibling

.github/workflows/build-installer.yml

@@ -18,8 +18,8 @@ jobs:
         with:
           cmake-version: '3.31.6'
 
-      - name: Set up Ninja
-        uses: seanmiddleditch/gha-setup-ninja@
+      - name: Setup Ninja
+        uses: ashutoshvarma/setup-ninja@master
 
       - name: Install NSIS
         run: choco install nsis -y