Upgrade to llvm 18

Author: Anton-4

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
     # The type of runner that the job will run on
     runs-on: windows-latest
     env:
-      llvm_version: 16.0.6
+      llvm_version: 18.1.8
 
 
     # Steps represent a sequence of tasks that will be executed as part of the job