fix(ci): install NSIS for building Windows package

Signed-off-by: Samuel Gaist <samuel.gaist@idiap.ch>

.github/workflows/reusable_build_packages.yaml

@@ -353,6 +353,9 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Install NSIS
+        run: choco install nsis -y
+
       # NOTE: Backslash doesn't work as line continuation on Windows.
       - name: Prepare project
         run: |