minidom: Replace IPv4 test with IPv6

Emmanuel Gil Peyrot created 

This makes the tests pass again on nightly, and avoids using legacy IP
while we have glorious IPv6 support everywhere nowadays.

See also https://github.com/rust-lang/rust/issues/90199

Change summary

minidom/src/convert.rs | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

Detailed changes

minidom/src/convert.rs 🔗 

@@ -84,11 +84,11 @@ mod tests {
         assert_eq!(18i32.into_attribute_value().unwrap(), "18");
         assert_eq!((-19i64).into_attribute_value().unwrap(), "-19");
         assert_eq!(
-            IpAddr::from_str("127.000.0.1")
+            IpAddr::from_str("0000:0::1")
                 .unwrap()
                 .into_attribute_value()
                 .unwrap(),
-            "127.0.0.1"
+            "::1"
         );
     }
 }