Bump phpseclib/phpseclib from 3.0.21 to 3.0.34 in /lib/php/workflow

Bumps [phpseclib/phpseclib](https://github.com/phpseclib/phpseclib) from 3.0.21 to 3.0.34.
- [Release notes](https://github.com/phpseclib/phpseclib/releases)
- [Changelog](https://github.com/phpseclib/phpseclib/blob/master/CHANGELOG.md)
- [Commits](phpseclib/phpseclib@3.0.21...3.0.34)

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

Signed-off-by: dependabot[bot] <[email protected]>