Add residential attribute to the anonymizer object

The minFraud Insights and Factors web services now return a
residential sub-object on ip_address.anonymizer containing residential
proxy data for the network: a confidence score, the network last seen
date, and the provider name. It may be populated even when no other
anonymizer attributes are set. This is exposed automatically via
MaxMind::GeoIP2::Record::Anonymizer#residential once the app is
running maxmind-geoip2 >= 1.6.0, so no model changes are needed here,
only updated fixtures, specs, and the changelog.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: oschwald

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 ## v2.10.0
 
+* Added the `residential` attribute to the `anonymizer` object on
+  `Minfraud::Model::IPAddress`. This object contains residential proxy
+  data for the network, including a confidence score, the network last
+  seen date, and the provider name. It may be populated even when no
+  other anonymizer attributes are set. This is only available from the
+  minFraud Insights and Factors web services. This requires version
+  1.6.0 or greater of the maxmind-geoip2 gem.
 * Added the `tracking_token` attribute to `Minfraud::Components::Device`.
   This is the token generated by the
   [Device Tracking Add-on](https://dev.maxmind.com/minfraud/track-devices)

spec/fixtures/files/factors-response1.json

@@ -139,7 +139,12 @@
       "is_residential_proxy": true,
       "is_tor_exit_node": true,
       "network_last_seen": "2025-01-15",
-      "provider_name": "TestVPN"
+      "provider_name": "TestVPN",
+      "residential": {
+        "confidence": 82,
+        "network_last_seen": "2026-05-11",
+        "provider_name": "quickshift"
+      }
     }
   },
   "billing_address": {

spec/fixtures/files/insights-response1.json

@@ -151,7 +151,12 @@
       "is_residential_proxy": true,
       "is_tor_exit_node": true,
       "network_last_seen": "2025-01-15",
-      "provider_name": "TestVPN"
+      "provider_name": "TestVPN",
+      "residential": {
+        "confidence": 82,
+        "network_last_seen": "2026-05-11",
+        "provider_name": "quickshift"
+      }
     }
   },
   "billing_address": {

spec/model/insights_spec.rb

@@ -100,6 +100,12 @@
         provider_name:      'TestVPN'
       )
 
+      expect(m.ip_address.anonymizer.residential).to have_attributes(
+        confidence:        82,
+        network_last_seen: Date.new(2_026, 5, 11),
+        provider_name:     'quickshift'
+      )
+
       expect(m.billing_address.is_postal_in_city).to be false
       expect(m.billing_address.latitude).to eq 41.310571
       expect(m.billing_address.longitude).to eq(-72.922891)