docker: remove fixed old version for imagemagick (#1163)

Co-authored-by: Gabriel Moreno <[email protected]>

Author: gamoreno

docker/Dockerfile

@@ -5,7 +5,7 @@ COPY requirements.txt /root
 WORKDIR /root
 RUN /usr/bin/python -m pip install --upgrade pip
 RUN pip3 install -r requirements.txt 
-RUN apt-get update && apt-get install -y --no-install-recommends imagemagick=8:6.9.7.4+dfsg-16ubuntu6.12 \
+RUN apt-get update && apt-get install -y --no-install-recommends imagemagick \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*
 EXPOSE 8888/tcp