Use Debian bookworm to get a newer version of Go.

We need at least Go 1.17.13 to build Go 1.21.

Dockerfile

-FROM debian:bullseye
+FROM debian:bookworm
 
 ENV LANG=C.UTF-8
 ENV DEBIAN_FRONTEND=noninteractive

install.sh

@@ -5,8 +5,8 @@ set -x
 # use snapshot repos for deterministic package versions
 DATE="20240301T000000Z"
 cat << EOF > /etc/apt/sources.list
-deb http://snapshot.debian.org/archive/debian/${DATE}/ bullseye main
-deb http://snapshot.debian.org/archive/debian/${DATE}/ bullseye-updates main
+deb http://snapshot.debian.org/archive/debian/${DATE}/ bookworm main
+deb http://snapshot.debian.org/archive/debian/${DATE}/ bookworm-updates main
 EOF
 
 # ignore expired package releases so we can reproduce from old snapshots