fix: handle missing keys in batch data

Trying to fix these types of errors:
```
File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 2190, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1486, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.10/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1484, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.10/site-packages/flask/app.py", line 1469, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
  File "/usr/local/lib/python3.10/site-packages/flask_json.py", line 340, in wrapper2
    rv = f(*args, **kw)
  File "/usr/local/lib/python3.10/site-packages/masquerade/main.py", line 272, in geocode_addresses
    cleanse_text(address['attributes']['Address']), zone, out_spatial_reference
KeyError: 'Address'
```

src/masquerade/main.py

@@ -278,7 +278,7 @@ def geocode_addresses():
                 candidate = no_match
             else:
                 candidate['attributes']['ResultID'] = address['attributes']['OBJECTID']
-        except HTTPError:
+        except (HTTPError, KeyError):
             candidate = no_match
 
         locations.append(candidate)

tests/test_masquerade.py

@@ -83,3 +83,32 @@ def test_can_handle_bad_values(test_client):
     response_json = json.loads(response.data)
 
     assert len(response_json['suggestions']) > 0
+
+
+def test_batch_can_handle_missing_addresses(test_client):
+    response = test_client.post(
+        f'{GEOCODE_SERVER_ROUTE}/geocodeAddresses',
+        data={
+            'addresses': dumps({
+                'records': [{
+                    'attributes': {
+                        'OBJECTID': 1,
+                        'Zip': '84043'
+                    }
+                }, {
+                    'attributes': {
+                        'OBJECTID': 2,
+                        'Zip': '84043'
+                    }
+                }]
+            })
+        }
+    )
+
+    assert response.status_code == 200
+
+    response_json = json.loads(response.data)
+
+    assert len(response_json['locations']) == 2
+    assert response_json['locations'][0]['address'] == None
+    assert response_json['locations'][1]['address'] == None