Update validate_url gem

This removes a Ruby 2.7 `URI.escape` deprecation warning.

Changes: https://my.diffend.io/gems/validate_url/1.0.8/1.0.13

Gemfile.lock

@@ -1277,7 +1277,7 @@ GEM
     validate_email (0.1.6)
       activemodel (>= 3.0)
       mail (>= 2.2.5)
-    validate_url (1.0.8)
+    validate_url (1.0.13)
       activemodel (>= 3.0.0)
       public_suffix
     validates_hostname (1.0.11)

changelogs/unreleased/update-validate-url-gem.yml

+---
+title: Update validate_url gem
+merge_request: 55706
+author:
+type: fixed