Update to pass the mypy hook

Make the necessary changes to pass the `mypy` pre-commit hook.

Author: mcdonnnj

.pre-commit-config.yaml

@@ -116,6 +116,8 @@ repos:
     hooks:
       - id: mypy
         additional_dependencies:
+          - types-docopt
+          - types-requests
           - types-setuptools
   - repo: https://github.com/asottile/pyupgrade
     rev: v3.2.0

src/trustymail/domain.py

@@ -2,6 +2,7 @@
 from collections import OrderedDict
 from datetime import datetime, timedelta
 from os import path, stat
+from typing import Dict
 
 # Third-Party Libraries
 import publicsuffix
@@ -60,7 +61,7 @@ def format_list(record_list):
 
 
 class Domain:
-    base_domains = {}
+    base_domains: Dict[str, Domain] = {}
 
     def __init__(
         self,