#189 Update devcontainer to use Python 3.11

Author: astropenguin

.devcontainer/Dockerfile

@@ -1,8 +1,8 @@
-FROM python:3.10-slim
+FROM python:3.11-slim
 
 ENV PATH=$PATH:/root/.local/bin
 ENV POETRY_VIRTUALENVS_CREATE=false
-ENV POETRY_VERSION=1.2.0
+ENV POETRY_VERSION=1.3.2
 
 RUN apt-get update \
     && apt-get install -y curl git \