build(deps-dev): update jane-php/open-api-3 requirement

Updates the requirements on [jane-php/open-api-3](https://github.com/janephp/open-api-3) to permit the latest version.
- [Commits](janephp/open-api-3@v7.7.0...v7.8.0)

---
updated-dependencies:
- dependency-name: jane-php/open-api-3
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -25,7 +25,7 @@
         "php": ">=8.0"
     },
     "require-dev": {
-        "jane-php/open-api-3": "7.7.0",
+        "jane-php/open-api-3": "7.8.0",
         "nyholm/psr7": "^1.8",
         "friendsofphp/php-cs-fixer": "^3.22",
         "pestphp/pest": "^1.23 || ^2.0",