update a langchain-postgres alpha 1.0.0a1 for langchain 1.0.0 alpha version

[bulolo]

we should update a alpha 1.0.0 a for langchain 1.0.0 alpha version

uv add langchain-postgres==0.0.15
  × No solution found when resolving dependencies for split (markers: python_full_version == '3.12.*'):
  ╰─▶ Because langchain-postgres==0.0.15 depends on langchain-core>=0.2.13,<0.4.0 and your project depends on
      langchain-core==1.0.0a8, we can conclude that your project and langchain-postgres==0.0.15 are incompatible.
      And because your project depends on langchain-postgres==0.0.15, we can conclude that your project's requirements are
      unsatisfiable.
  help: If you want to add the package regardless of the failed resolution, provide the `--frozen` flag to skip locking and
        syncing.