.gitattributes: Fix .php-cs-fixer.dist.php export-ignore (#861)

## Description

<!-- Provide a brief description of the changes in this PR -->

`.php-cs-fixer.dist.php` is incorrectly being included.

## Related Issue

<!-- Link to the issue this PR addresses (if applicable) -->
<!-- Fixes #(issue number) -->

## Type of Change

<!-- Mark the appropriate option with an "x" -->

- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Documentation update
- [ ] Code refactoring
- [ ] Other (please describe):

## Checklist

<!-- Mark completed items with an "x" -->

- [x] I have read the [CONTRIBUTING](CONTRIBUTING.md) guidelines
- [ ] My code follows the code style of this project
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] All new and existing tests pass
- [ ] I have updated the documentation accordingly
- [ ] My changes generate no new warnings

## Additional Notes

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-->

---------

Co-authored-by: Danny van der Sluijs <danny.van.der.sluijs@infi.nl>

Author: reedy

.gitattributes

@@ -4,7 +4,7 @@
 /tests export-ignore
 /.gitattributes export-ignore
 /.gitignore export-ignore
-/.php-cs-fixer.dist export-ignore
+/.php-cs-fixer.dist.php export-ignore
 /phpstan-baseline.neon export-ignore
 /phpstan.neon export-ignore
 /phpunit.xml.dist export-ignore

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - ci: Run workflows against 5.x.x branches ([#859](https://github.com/jsonrainbow/json-schema/pull/859))
 ### Fixed
 - UriValidator: Allow `file:/` and `file:///` ([#856](https://github.com/jsonrainbow/json-schema/discussions/856))
+- Fix .php-cs-fixer.dist.php export-ignore ([#861](https://github.com/jsonrainbow/json-schema/discussions/861))
 
 ## [6.6.3] - 2025-12-02
 ### Changed