wine build: build win-iconv-mingw-w64-dev, instead of using debian sid

without this, when using a ~week old debian sid snapshot, I got:
```
E: Release file for https://snapshot.debian.org/archive/debian/20220811T031049Z/dists/sid/InRelease is expired (invalid since 1d 11h 56min 39s). Updates for this repository will not be applied.
```

contrib/build-wine/Dockerfile

@@ -24,12 +24,12 @@ RUN dpkg --add-architecture i386 && \
         make \
         mingw-w64 \
         mingw-w64-tools \
-        win-iconv-mingw-w64-dev \
         autotools-dev \
         autoconf \
         autopoint \
         libtool \
         gettext \
+        sudo \
         && \
     rm -rf /var/lib/apt/lists/* && \
     apt-get autoremove -y && \