[gpu/config] Extend cubemap exception to 10.9

This will enable the exception for the mac_release_optional trybots
running NVIDIA GPUs. This is necessary because these bots currently use
the workaround list for Intel GPU when running WebGL (fixing this is
TODO). Extending the exception should be safe because the workaround is
older than 2012 and MacOS 10.9 was released in 2014.

BUG=587781
BUG=576219
CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel

Review URL: https://codereview.chromium.org/1781863003

Cr-Commit-Position: refs/heads/master@{#381082}

gpu/config/gpu_driver_bug_list_json.cc

@@ -19,7 +19,7 @@ const char kGpuDriverBugListJson[] = LONG_STRING_CONST(
 {
   "name": "gpu driver bug list",
   // Please update the version number whenever you change this file.
-  "version": "8.48",
+  "version": "8.49",
   "entries": [
     {
       "id": 1,
@@ -193,7 +193,7 @@ const char kGpuDriverBugListJson[] = LONG_STRING_CONST(
         "type": "macosx",
         "version": {
           "op": "<",
-          "value": "10.10"
+          "value": "10.9"
         }
       },
       "vendor_id": "0x8086",