unix: update to kernel Linux 6.12

Change-Id: I7c8157d5f1b597b6ae249b20866bbad918b46fa4
GitHub-Last-Rev: 0bbc2ef
GitHub-Pull-Request: #238
Reviewed-on: https://go-review.googlesource.com/c/sys/+/629075
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

Author: mauri870

unix/linux/Dockerfile

@@ -15,8 +15,8 @@ RUN apt-get update && apt-get install -y  --no-install-recommends \
 # Get the git sources. If not cached, this takes O(5 minutes).
 WORKDIR /git
 RUN git config --global advice.detachedHead false
-# Linux Kernel: Released 15 Sep 2024
-RUN git clone --branch v6.11 --depth 1 https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
+# Linux Kernel: Released 17 Nov 2024
+RUN git clone --branch v6.12 --depth 1 https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
 # GNU C library: Released 21 July 2024
 RUN git clone --branch release/2.40/master --depth 1 https://sourceware.org/git/glibc.git