Bump phpseclib/phpseclib from 3.0.19 to 3.0.35 in /tests/php (#104)

Bumps [phpseclib/phpseclib](https://github.com/phpseclib/phpseclib) from 3.0.19 to 3.0.35.
- [Release notes](https://github.com/phpseclib/phpseclib/releases)
- [Changelog](https://github.com/phpseclib/phpseclib/blob/master/CHANGELOG.md)
- [Commits](phpseclib/phpseclib@3.0.19...3.0.35)

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

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

Author: dependabot[bot]