[Bazel] Update for bc1a2979fc

Update Bazel build configuration for
https://github.com/llvm/llvm-project/commit/bc1a2979fc70
by adding missing dep to clang tooling unit tests.

utils/bazel/llvm-project-overlay/clang/BUILD.bazel

@@ -446,9 +446,9 @@ cc_library(
         ":basic_arm_sve_builtins_gen",
         ":basic_arm_sve_typeflags_gen",
         ":basic_attr_gen",
+        ":basic_internal_headers",
         ":basic_riscv_vector_builtin_cg_gen",
         ":basic_riscv_vector_builtins_gen",
-        ":basic_internal_headers",
         ":config",
         ":diagnostic_defs_gen",
         ":sema_attr_gen",

utils/bazel/llvm-project-overlay/clang/unittests/BUILD.bazel

@@ -213,8 +213,8 @@ cc_test(
     size = "small",
     srcs = glob(
         [
-          "Lex/*.cpp",
-          "Lex/*.h",
+            "Lex/*.cpp",
+            "Lex/*.h",
         ],
         allow_empty = False,
     ),
@@ -383,6 +383,7 @@ cc_test(
         "//clang:rewrite",
         "//clang:tooling",
         "//clang:tooling_core",
+        "//clang:tooling_dependency_scanning",
         "//clang:tooling_inclusions",
         "//clang:tooling_refactoring",
         "//clang:transformer",