build(python): pin setuptools to v70 (reanahub#696)

Fix `packaging.version.InvalidVersion` when installing the Python
dependencies.

Dockerfile

@@ -33,7 +33,7 @@ RUN apt-get update -y && \
       python3.8 \
       python3.8-dev \
       vim-tiny && \
-    pip install --no-cache-dir --upgrade pip setuptools && \
+    pip install --no-cache-dir --upgrade pip 'setuptools<71' && \
     pip install --no-cache-dir -r /code/requirements.txt && \
     apt-get remove -y \
       gcc \