Dockerfile: refresh maintainer tools

Author: sbidoul

Dockerfile

@@ -22,7 +22,7 @@ RUN set -x \
   && python3 -m venv /ocamt \
   && /ocamt/bin/pip install wheel
 RUN set -x \
-  && /ocamt/bin/pip install -e git+https://github.com/OCA/maintainer-tools@c7ac2741c02df0ad49ba637e2dca8e67d460af47#egg=oca-maintainers-tools \
+  && /ocamt/bin/pip install -e git+https://github.com/OCA/maintainer-tools@73c47b6835bee3ab0eeeff7c463de6b9c085abbc#egg=oca-maintainers-tools \
   && ln -s /ocamt/bin/oca-gen-addons-table /usr/local/bin/ \
   && ln -s /ocamt/bin/oca-gen-addon-readme /usr/local/bin/ \
   && ln -s /ocamt/bin/oca-gen-addon-icon /usr/local/bin/ \