fixing build cts

Author: Kbz-8

build.zig

@@ -243,7 +243,7 @@ fn addMultithreadedCTS(b: *std.Build, target: std.Build.ResolvedTarget, impl: *c
     run.addArg("run");
     run.addArg("--deqp");
     if (std.process.getEnvVarOwned(b.allocator, "ZIG_GLOBAL_CACHE_DIR")) |cache_path| {
-        run.addArg(b.fmt("{s}/{s}", .{ cache_path, cts_exe_path }));
+        run.addArg(b.fmt("{s}/../{s}", .{ cache_path, cts_exe_path }));
     } else |err| switch (err) {
         error.EnvironmentVariableNotFound => {
             run.addArg(cts_exe_path);