Bump symfony/http-kernel from 6.4.25 to 6.4.26 in /web/landing

Bumps [symfony/http-kernel](https://github.com/symfony/http-kernel) from 6.4.25 to 6.4.26.
- [Release notes](https://github.com/symfony/http-kernel/releases)
- [Changelog](https://github.com/symfony/http-kernel/blob/7.3/CHANGELOG.md)
- [Commits](symfony/http-kernel@v6.4.25...v6.4.26)

---
updated-dependencies:
- dependency-name: symfony/http-kernel
  dependency-version: 6.4.26
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]