chore: update devcontainer

.devcontainer/Dockerfile

@@ -1,8 +1,8 @@
 # See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.224.3/containers/python-3/.devcontainer/base.Dockerfile
 
 # [Choice] Python version (use -bullseye variants on local arm64/Apple Silicon): 3, 3.10, 3.9, 3.8, 3.7, 3.6, 3-bullseye, 3.10-bullseye, 3.9-bullseye, 3.8-bullseye, 3.7-bullseye, 3.6-bullseye, 3-buster, 3.10-buster, 3.9-buster, 3.8-buster, 3.7-buster, 3.6-buster
-ARG VARIANT="3.11-bullseye"
-FROM mcr.microsoft.com/vscode/devcontainers/python:0-${VARIANT}
+ARG VARIANT="3.12-bookworm"
+FROM mcr.microsoft.com/devcontainers/python:${VARIANT}
 
 # [Choice] Node.js version: none, lts/*, 16, 14, 12, 10
 ARG NODE_VERSION="none"

.devcontainer/devcontainer.json

@@ -9,7 +9,7 @@
 			// Update 'VARIANT' to pick a Python version: 3, 3.10, 3.9, 3.8, 3.7, 3.6
 			// Append -bullseye or -buster to pin to an OS version.
 			// Use -bullseye variants on local on arm64/Apple Silicon.
-			"VARIANT": "3.12-bullseye",
+			"VARIANT": "3.12-bookworm",
 			// Options
 			"NODE_VERSION": "none"
 		}