change PUT methods to POST for user blockation methods

GitLab/Users.pm

@@ -267,12 +267,12 @@ my $requests = {
 
     # Block/unblock
     user_block      => {
-        method      => "PUT",
+        method      => "POST",
         path        => "/users/<uid>/block",
     },
 
     user_unblock    => {
-        method      => "PUT",
+        method      => "POST",
         path        => "/users/<uid>/unblock",
     },