Update deps to latest pre-major pandas upgrade (#20)

* Update deps to latest pre-major pandas upgrade

* Update Dockerfile

* Update lock

.devcontainer/Dockerfile

@@ -3,14 +3,12 @@ ARG VARIANT="3"
 FROM mcr.microsoft.com/vscode/devcontainers/python:${VARIANT}
 
 ARG POETRY_VERSION="1.2.1"
-ARG POETRY_SRC="https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py"
+ARG POETRY_SRC="https://install.python-poetry.org"
 
 USER vscode
 WORKDIR /home/vscode
 
-RUN curl -fsSL -o install-poetry.py "${POETRY_SRC}" \
- && python install-poetry.py --version $POETRY_VERSION \
- && rm install-poetry.py
+RUN curl -sSL "${POETRY_SRC}" | python3 - --version ${POETRY_VERSION}
 
 RUN mkdir -p .config/git \
  && echo ".vscode/*" >> .config/git/ignore \