Bump symfony/polyfill-php80 from 1.30.0 to 1.31.0 (OpenMage#4197)

Bumps [symfony/polyfill-php80](https://github.com/symfony/polyfill-php80) from 1.30.0 to 1.31.0.
- [Commits](symfony/polyfill-php80@v1.30.0...v1.31.0)

---
updated-dependencies:
- dependency-name: symfony/polyfill-php80
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]