[CI] Bump Level Zero version to 1.20.6 (#17778)

Theory from
[here](#17774 (comment))
is we need to match the version from
[here](https://github.com/intel/compute-runtime/blob/25.09.32961.7/manifests/manifest.yml#L50-L56).

Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>

Author: sarnex

devops/dependencies.json

@@ -19,9 +19,9 @@
       "root": "{DEPS_ROOT}/opencl/runtime/linux/oclgpu"
     },
     "level_zero": {
-      "github_tag": "v1.20.2",
-      "version": "v1.20.2",
-      "url": "https://github.com/oneapi-src/level-zero/releases/tag/v1.20.2",
+      "github_tag": "v1.20.6",
+      "version": "v1.20.6",
+      "url": "https://github.com/oneapi-src/level-zero/releases/tag/v1.20.6",
       "root": "{DEPS_ROOT}/opencl/runtime/linux/oclgpu"
     },
     "tbb": {