[bazel] Port for 7302c8d

Author: hokein

utils/bazel/llvm-project-overlay/libc/test/src/__support/FPUtil/BUILD.bazel

@@ -14,6 +14,7 @@ libc_test(
     name = "fpbits_test",
     srcs = ["fpbits_test.cpp"],
     deps = [
+        "//libc:__support_big_int",
         "//libc:__support_fputil_fp_bits",
         "//libc:__support_fputil_fpbits_str",
         "//libc:__support_integer_literals",