CUDA: bump to 12.6.2 (#1127)

- This includes NCCL 2.23.4.

Author: olupton

.github/container/Dockerfile.base

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1-labs
-ARG BASE_IMAGE=nvidia/cuda:12.6.1-devel-ubuntu22.04
+ARG BASE_IMAGE=nvidia/cuda:12.6.2-devel-ubuntu22.04
 ARG GIT_USER_NAME="JAX Toolbox"
 ARG [email protected]
 ARG CLANG_VERSION=18