message: Update ClangASTContext for the new DependentVector type.
diff: @@ -5105,6 +5105,7 @@ lldb::Encoding ClangASTContext::GetEncoding(lldb::opaque_compiler_type_t type,
  .GetEncoding(count);
  case clang::Type::DependentSizedArray:
  case clang::Type::DependentSizedExtVector:
  + case clang::Type::DependentVector:
  case clang::Type::UnresolvedUsing:
  case clang::Type::Attributed:
  case clang::Type::TemplateTypeParm:
  @@ -5272,6 +5273,7 @@ lldb::Format ClangASTContext::GetFormat(lldb::opaque_compiler_type_t type) {
  .GetFormat();
  case clang::Type::DependentSizedArray:
  case clang::Type::DependentSizedExtVector:
  + case clang::Type::DependentVector:
  case clang::Type::UnresolvedUsing:
  case clang::Type::Attributed:
  case clang::Type::TemplateTypeParm:
  