Fix phone numbers used in tests

This test started to fail with an upgrade of the `phonenumbers` package (imported via `followthemoney`) which included updated phone number validation rules. As a result, the phone numbers in this test case didn’t pass validation anymore and were cleaned from the entites created.

At first glance these numbers seemed to be valid German mobile phone numbers and I was worried that there might be a regression in `phonenumbers`. But according to the International Telecommunication Union, a phone number with the prefix `176` has to be 11 digits long. I adjusted the tests accordingly.

https://www.itu.int/oth/T0202000051/en

aleph/tests/test_entities_api.py

@@ -363,7 +363,7 @@ def test_entity_tags(self):
             "collection_id": self.col_id,
             "properties": {
                 "name": "Blaaaa blubb",
-                "phone": ["+491769817271", "+491769817999"],
+                "phone": ["+4917698172710", "+4917698179990"],
             },
         }
         resa = self.client.post(
@@ -374,7 +374,7 @@ def test_entity_tags(self):
             "collection_id": self.col_id,
             "properties": {
                 "name": "Nobody Man",
-                "phone": ["+491769817271", "+491769817777"],
+                "phone": ["+4917698172710", "+4917698177770"],
             },
         }
         resa = self.client.post(
@@ -385,7 +385,7 @@ def test_entity_tags(self):
         assert res.status_code == 200, (res.status_code, res.json)
         results = res.json["results"]
         assert len(results) == 1, results
-        assert results[0]["value"] == "+491769817271", results
+        assert results[0]["value"] == "+4917698172710", results
         validate(res.json["results"][0], "EntityTag")
 
     def test_undelete(self):