minor #19790 Use DOCtor-RST 1.60.1 (OskarStark)

This PR was squashed before being merged into the 5.4 branch.

Discussion
----------

Use DOCtor-RST 1.60.1

cc `@alamirault` `@smnandre`

Commits
-------

826c021 Use DOCtor-RST 1.60.1

Author: OskarStark

.doctor-rst.yaml

@@ -15,6 +15,7 @@ rules:
     ensure_correct_format_for_phpfunction: ~
     ensure_exactly_one_space_before_directive_type: ~
     ensure_exactly_one_space_between_link_definition_and_link: ~
+    ensure_explicit_nullable_types: ~
     ensure_github_directive_start_with_prefix:
         prefix: 'Symfony'
     ensure_link_bottom: ~

.github/workflows/ci.yaml

@@ -73,7 +73,7 @@ jobs:
                     key: ${{ runner.os }}-doctor-rst-${{ steps.extract_base_branch.outputs.branch }}
 
             -   name: "Run DOCtor-RST"
-                uses: docker://oskarstark/doctor-rst:1.59.0
+                uses: docker://oskarstark/doctor-rst:1.60.1
                 with:
                     args: --short --error-format=github --cache-file=/github/workspace/.cache/doctor-rst.cache
 

validation/custom_constraint.rst

@@ -320,9 +320,9 @@ define those options as public properties on the constraint class:
 
             public function __construct(
                 $mandatoryFooOption,
-                string $message = null,
-                bool $optionalBarOption = null,
-                array $groups = null,
+                ?string $message = null,
+                ?bool $optionalBarOption = null,
+                ?array $groups = null,
                 $payload = null,
                 array $options = []
             ) {