fix: add __future__.annotations import

Author: BobDotCom

tests/http/test_guild.py

@@ -21,6 +21,8 @@
 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
 """
+from __future__ import annotations
+
 from random import choice, randint, randrange, sample
 from typing import get_args