ci: Move forward Rust for Linux version to v6.17-rc2

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
diff --git a/ci/test.sh b/ci/test.sh
index 952b48e..5872638 100755
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -96,7 +96,7 @@
   # and each update should only contain this change.
   #
   # Both commit hashes and tags are supported.
-  LINUX_VERSION=v6.16-rc1
+  LINUX_VERSION=v6.17-rc2
 
   # Download Linux at a specific commit
   mkdir -p linux