Fix LAPACK vendor detection for Julia version compatibility

Add try-catch block around LinearAlgebra.LAPACK.vendor() call since
this function doesn't exist in all Julia versions. Falls back to
using BLAS vendor as LAPACK vendor when not available.

Fixes UndefVarError: vendor not defined in LinearAlgebra.LAPACK
in gpu_detection.jl:143

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: ChrisRackauckas

lib/LinearSolveAutotune/src/gpu_detection.jl

@@ -140,7 +140,13 @@ function get_detailed_system_info()
 
     # BLAS and linear algebra libraries
     system_data["blas_vendor"] = string(LinearAlgebra.BLAS.vendor())
-    system_data["lapack_vendor"] = string(LinearAlgebra.LAPACK.vendor())
+    # LAPACK vendor detection (safe for different Julia versions)
+    try
+        system_data["lapack_vendor"] = string(LinearAlgebra.LAPACK.vendor())
+    catch
+        # Fallback: LAPACK vendor often matches BLAS vendor
+        system_data["lapack_vendor"] = system_data["blas_vendor"]
+    end
     system_data["blas_num_threads"] = LinearAlgebra.BLAS.get_num_threads()
 
     # LinearSolve-specific package availability