build: Install wimtools from bookworm (#48)

Dockerfile

@@ -1,23 +1,25 @@
 FROM scratch
-COPY --from=qemux/qemu-arm:1.06 / /
+COPY --from=qemux/qemu-arm:1.07 / /
 
 ARG DEBCONF_NOWARNINGS "yes"
 ARG DEBIAN_FRONTEND "noninteractive"
 ARG DEBCONF_NONINTERACTIVE_SEEN "true"
 
-RUN apt-get update \
-    && apt-get --no-install-recommends -y install \
+RUN apt-get update && \
+    apt-get --no-install-recommends -y install \
         curl \
         7zip \
         wsdd \
         samba \
-        wimtools \
         dos2unix \
         cabextract \
         genisoimage \
-        libxml2-utils \
-    && apt-get clean \
-    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+        libxml2-utils && \
+    echo "deb http://deb.debian.org/debian/ bookworm main" >> /etc/apt/sources.list.d/bookworm.list && \
+    apt-get update && \
+    apt-get -t bookworm --no-install-recommends -y install wimtools && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 COPY ./src /run/
 COPY ./assets /run/assets