Bump composer/composer from 1.10.20 to 1.10.26

Bumps [composer/composer](https://github.com/composer/composer) from 1.10.20 to 1.10.26.
- [Release notes](https://github.com/composer/composer/releases)
- [Changelog](https://github.com/composer/composer/blob/1.10.26/CHANGELOG.md)
- [Commits](composer/composer@1.10.20...1.10.26)

---
updated-dependencies:
- dependency-name: composer/composer
  dependency-type: indirect
...

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