Install InnoSetup on Windows 2025

Author: jeroen

.github/workflows/build-svn.yaml

@@ -158,6 +158,11 @@ jobs:
       run: git config --global core.autocrlf false
       shell: bash
 
+    - name: Install InnoSetup
+      if: matrix.script == 'installer'
+      run: choco install innosetup
+      shell: cmd
+
     - name: Checkout
       uses: actions/checkout@v4
       with: