⬆️ Bump pipen to 0.12

Author: pwwang

.codesandbox/Dockerfile

@@ -1,7 +1,6 @@
 FROM python:3.10.12
 
 RUN apt-get update && apt-get install -y fish && \
-    pip install -U pip && \
     pip install poetry && \
     poetry config virtualenvs.create false && \
     chsh -s /usr/bin/fish