minor symfony#61281 [OptionsResolver] make data provider static (xabbuh)

This PR was merged into the 7.4 branch.

Discussion
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[OptionsResolver] make data provider static

| Q             | A
| ------------- | ---
| Branch?       | 7.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

Commits
-------

9002c0e make data provider static

Author: xabbuh

src/Symfony/Component/OptionsResolver/Tests/OptionsResolverTest.php

@@ -2068,7 +2068,7 @@ public function testDeeplyNestedUnionTypesException(string $type, $invalidValue,
         $this->resolver->resolve(['option' => $invalidValue]);
     }
 
-    public function provideValidDeeplyNestedUnionTypes(): array
+    public static function provideValidDeeplyNestedUnionTypes(): array
     {
         $resource = fopen('php://memory', 'r');
         $object = new \stdClass();
@@ -2144,7 +2144,7 @@ public function provideValidDeeplyNestedUnionTypes(): array
         ];
     }
 
-    public function provideInvalidDeeplyNestedUnionTypes(): array
+    public static function provideInvalidDeeplyNestedUnionTypes(): array
     {
         $resource = fopen('php://memory', 'r');
         $object = new \stdClass();