maint: update certificates to preempt FS download failure

Author: oesteban

Dockerfile

@@ -28,6 +28,8 @@ RUN apt-get update && \
                     unzip && \
     apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+RUN update-ca-certificates -f
+
 # FreeSurfer 7.3.2
 FROM downloader as freesurfer
 COPY docker/files/freesurfer7.3.2-exclude.txt /usr/local/etc/freesurfer7.3.2-exclude.txt