Fix maintainer tools commit

Author: sbidoul

Dockerfile

@@ -30,7 +30,7 @@ RUN set -x \
   && python${PY} -m venv /ocamt \
   && /ocamt/bin/pip install --no-cache-dir -U pip wheel
 RUN set -x \
-  && /ocamt/bin/pip install --no-cache-dir -e git+https://github.com/OCA/maintainer-tools@62d81e2e7e2a60ea7082d4f54095f905443a4d0b#egg=oca-maintainers-tools \
+  && /ocamt/bin/pip install --no-cache-dir -e git+https://github.com/OCA/maintainer-tools@f9b919b9868143135a9c9cb03021089cabba8223#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/ \