upgrade pip with venv

.devcontainer/on-create-command.sh

@@ -1,9 +1,7 @@
 #!/bin/bash
 set -e
-
-python3 -m venv .venv
+python3 -m venv --upgrade-deps .venv
 . .venv/bin/activate
-pip install -U pip
 pip install -r requirements/dev.txt
 pip install -e .
 pre-commit install --install-hooks