Fix tests broken by new netaddr version

netaddr 1.0.0 disabled its INET_ATON flag by default, breaking some of
our tests. Re-enable the flag so the tests pass again.

.cookiecutter/includes/setuptools/install_requires

@@ -1,4 +1,4 @@
 requests
 jsonschema
 importlib_resources
-netaddr
+netaddr>1.0.0

setup.cfg

@@ -21,7 +21,7 @@ install_requires =
     requests
     jsonschema
     importlib_resources
-    netaddr
+    netaddr>1.0.0
 
 [options.packages.find]
 where = src

src/checkmatelib/url/canonicalize.py

@@ -7,7 +7,7 @@
 import re
 from urllib.parse import ParseResult, unquote, urlparse
 
-from netaddr import AddrFormatError, IPAddress
+from netaddr import INET_ATON, AddrFormatError, IPAddress
 
 from checkmatelib.exceptions import BadURL
 
@@ -180,7 +180,7 @@ def _canonicalize_path(cls, path):
     def _decode_ip(cls, hostname):
         """Try and spot hostnames that are really encoded IP addresses."""
         try:
-            return str(IPAddress(hostname))
+            return str(IPAddress(hostname, flags=INET_ATON))
         except (AddrFormatError, ValueError):
             return None