fix(docker): install winetricks from script, not apt (not in bookworm)

winetricks was removed from Debian bookworm apt repositories;
download it directly from the official GitHub source instead.
Replace winetricks apt package with cabextract (its runtime dep)

contrib/windows/Dockerfile

@@ -8,9 +8,14 @@ RUN dpkg --add-architecture i386 && \
     apt-get update && apt-get install -y --no-install-recommends \
     wine wine64 \
     python3 python3-pip python3-venv libpython3.11 \
-    binutils wget xvfb xauth winetricks ca-certificates \
+    binutils wget xvfb xauth cabextract ca-certificates \
     && rm -rf /var/lib/apt/lists/*
 
+# Install winetricks manually (removed from Debian bookworm apt)
+RUN wget -q https://raw.githubusercontent.com/Winetricks/winetricks/master/src/winetricks \
+    -O /usr/local/bin/winetricks && \
+    chmod +x /usr/local/bin/winetricks
+
 WORKDIR /build
 
 # Copy repo