Update version file

Author: am11

src/native/external/llvm-libunwind-version.txt

@@ -1,4 +1,4 @@
-v20.1.0
-https://github.com/llvm/llvm-project/releases/tag/llvmorg-20.1.0
+v22.1.1
+https://github.com/llvm/llvm-project/releases/tag/llvmorg-22.1.1
 
-Apply https://github.com/dotnet/runtime/commit/d03d1ba7835fdf9e2a6bb537d49fb5ff6584697b
+Apply https://github.com/dotnet/runtime/commit/bead968e6abc89a28982e4f405decb107e60c11b