ci: addendum to 7ac7c57

.devcontainer/Dockerfile

@@ -1,5 +1,5 @@
 # See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.238.1/containers/rust/.devcontainer/base.Dockerfile
 
-# [Choice] Debian OS version (use bullseye on local arm64/Apple Silicon): buster, bullseye
-ARG VARIANT="buster"
+# [Choice] Debian OS version (use bullseye on local arm64/Apple Silicon): buster, bullseye, bookworm
+ARG VARIANT="bookworm"
 FROM mcr.microsoft.com/vscode/devcontainers/rust:1-${VARIANT}

.devcontainer/devcontainer.json

@@ -5,9 +5,9 @@
 	"build": {
 		"dockerfile": "Dockerfile",
 		"args": {
-			// Use the VARIANT arg to pick a Debian OS version: buster, bullseye
+			// Use the VARIANT arg to pick a Debian OS version: buster, bullseye, bookworm
 			// Use bullseye when on local on arm64/Apple Silicon.
-			"VARIANT": "bullseye"
+			"VARIANT": "bookworm"
 		}
 	},
 	"runArgs": [

.github/workflows/ci.yml

@@ -394,7 +394,7 @@ jobs:
 
     runs-on: ubuntu-latest
 
-    container: debian:bullseye-slim@sha256:8118d0da5204dcc2f648d416b4c25f97255a823797aeb17495a01f2eb9c1b487
+    container: debian:bookworm-slim
 
     # Benchmark failure is not critical enough to fail the whole workflow.
     # We will keep an eye on them anyway, though