chore(deps): drop poetry as a dependency in the python automate template (#40)

* chore: bump specklepy

* refactor: requirements files

* refactor: dockerfile

* refactor: update GitHub actions

* refactor: update devcontainer config

* docs: updated `README`

* docs: better explanations

* docs: wording

* chore: dependabot config

* docs: keeping things in sync

* fix: skip pip upgrade

* refactor: updated devcontainer

* refactor: toml instead of requirements

* refactor: update docker

* docs: updated `README`

* chore: classifiers does nothing

* chore: wrap up the v3 transition

---------

Co-authored-by: Gergő Jedlicska <gergo@jedlicska.com>

.devcontainer/devcontainer.json

@@ -4,9 +4,6 @@
   "name": "Python 3",
   // Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
   "image": "mcr.microsoft.com/devcontainers/python:1-3.11-bullseye",
-  "features": {
-    "ghcr.io/devcontainers-contrib/features/poetry:2": {}
-  },
 
   "remoteEnv": {
     "SPECKLE_TOKEN": "foobar"
@@ -22,7 +19,7 @@
   // "forwardPorts": [],
 
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": "cp .env.example .env && POETRY_VIRTUALENVS_IN_PROJECT=true poetry install --no-root",
+  "postCreateCommand": "cp .env.example .env && python -m venv .venv && . .venv/bin/activate && pip install --upgrade pip && pip install .[dev]",
 
   // Configure tool-specific properties.
   "customizations": {
@@ -40,4 +37,4 @@
 
   // Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
   // "remoteUser": "root"
-}
+}