fix(ci): fix aarch64-linux-gnu regex in toolchain.cmake

The regex `^aarch64-.*-linux` requires a vendor segment between arch and
os (e.g. aarch64-unknown-linux-gnu) but the triple `aarch64-linux-gnu`
has no vendor. Change to `^aarch64-.*linux` to match both forms.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 16bit-ykiko

cmake/toolchain.cmake

@@ -8,7 +8,7 @@ cmake_minimum_required(VERSION 3.30)
 if(DEFINED CLICE_TARGET_TRIPLE)
     if(CLICE_TARGET_TRIPLE MATCHES "^x86_64-apple-darwin")
         set(CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "")
-    elseif(CLICE_TARGET_TRIPLE MATCHES "^aarch64-.*-linux")
+    elseif(CLICE_TARGET_TRIPLE MATCHES "^aarch64-.*linux")
         set(CMAKE_SYSTEM_NAME Linux)
         set(CMAKE_SYSTEM_PROCESSOR aarch64)
         set(CMAKE_C_COMPILER_TARGET "aarch64-linux-gnu" CACHE STRING "")