fix: swagger-php 5.7.0 compatatiblity [Backport #2598 to 4.x] (#2603)

### This is an automated backport of #2598 to branch `4.x`.

> [!CAUTION]
> **Do not modify this pull request.**

## Description

Fixes zircote/swagger-php#1837

## What type of PR is this? (check all applicable)
- [x] Bug Fix
- [ ] Feature
- [ ] Refactor
- [ ] Deprecation
- [ ] Breaking Change
- [ ] Documentation Update
- [ ] CI

## Checklist
- [ ] I have made corresponding changes to the documentation (`docs/`)
- [ ] I have made corresponding changes to the changelog
(`CHANGELOG.md`)

Co-authored-by: Djordy Koert <djordy.koert@gmail.com>

Author: nelmioapidocbundle-backport[bot]

src/Processor/MapQueryStringProcessor.php

@@ -85,6 +85,7 @@ private function addQueryParameters(Analysis $analysis, OA\Operation $operation,
             // Remove incompatible properties
             $propertyVars = get_object_vars($property);
             unset($propertyVars['property']);
+            unset($propertyVars['encoding']);
 
             $schema = new OA\Schema($propertyVars);