update

Signed-off-by: Weizhen Wang <wangweizhen@pingcap.com>

Author: hawkingrei

pkg/planner/core/casetest/cbotest/BUILD.bazel

@@ -9,7 +9,7 @@ go_test(
     ],
     data = glob(["testdata/**"]),
     flaky = True,
-    shard_count = 18,
+    shard_count = 10,
     deps = [
         "//pkg/domain",
         "//pkg/executor",