Try to use CUDA 12.6 by default

If smth was broken you can try to add `-DCUDA_VERSION=12.2` and contact with me
commit_hash:0bf550230e036c9c1c80ea300753ef8b05dd628a

Author: 4JustMe4

build/ymake.core.conf

@@ -5678,7 +5678,7 @@ when ($CUDA11) {
 }
 
 when ($CUDA12) {
-    CUDA_VERSION=12.2
+    CUDA_VERSION=12.6
     CUDNN_VERSION=8.6.0
     TENSORRT_VERSION=8
     CUDA_ARCHITECTURES=

build/ymake_conf.py

@@ -2467,7 +2467,7 @@ def auto_have_cuda(self):
 
     def auto_cuda_version(self):
         if self.use_arcadia_cuda.value:
-            return '12.2'
+            return '12.6'
 
         if not self.have_cuda.value:
             return None