bumping the version min for agentex python sdk

[RoxyFarhad]

I hit this in creating a CLI tool that uses both the agentex SDK and the SGP beta SDK:

  × No solution found when resolving dependencies:
  ╰─▶ Because agentex-sdk==0.9.0 depends on scale-gp-beta==0.1.0a20 and agentex-cloud-build==0.1.0 depends on scale-gp-beta==0.1.0a42, we can
      conclude that agentex-cloud-build==0.1.0 and agentex-sdk==0.9.0 are incompatible.
      And because agentex-cloud-build==0.1.0 depends on agentex-sdk==0.9.0, we can conclude that agentex-cloud-build==0.1.0 cannot be used.
      And because only agentex-cloud-build==0.1.0 is available and you require agentex-cloud-build, we can conclude that your requirements
      are unsatisfiable.