Fix typo (#7883)

pub/lib/dependabot/pub/update_checker.rb

@@ -69,7 +69,7 @@ def updated_requirements
                   # This security update would require unlocking other packages, which is not currently supported.
                   # Because of that, return original requirements, so that no requirements are actually updated and
                   # the error bubbles up as security_update_not_possible to the user.
-                  return depedency.requirements if breaking_changes.size > 1
+                  return dependency.requirements if breaking_changes.size > 1
 
                   updates.find { |u| u["name"] == dependency.name }
                 else