Add basic-format-style dep for issue regression tests.

Clang layering_check requires a direct Bazel dep for the clang-tidy include of LineTerminatorOptionStyle.

verible/verilog/formatting/BUILD

diff --git a/verible/verilog/formatting/BUILD b/verible/verilog/formatting/BUILD
index 6e4782e..491a5cf 100644
--- a/verible/verilog/formatting/BUILD
+++ b/verible/verilog/formatting/BUILD
@@ -301,6 +301,7 @@
         ":format-style",
         ":formatter",
         ":formatter-test-utils",
+        "//verible/common/formatting:basic-format-style",
         "//verible/common/util:logging",
         "@googletest//:gtest",
         "@googletest//:gtest_main",