terminator: add missing `dbus-python`

[branchv]

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---

Relates to https://github.com/Homebrew/brew/pull/17886

$ pip3 --python $(brew --prefix terminator)/libexec check
terminator 2.1.4 requires dbus-python, which is not installed.

[branchv]

 Making check in tests
          foo.c:5:65: error: argument to 'section' attribute is not valid for this target: mach-o section specifier requires a segment and section separated by a comma
          const char __invoke_dynamic_linker__[] __attribute__ ((section (".interp"))) = "/foo/bar";
                                                                          ^
          1 error generated.

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