Bump client version to 2.5.0 (upon astrapy upgrade to v2) (#93)

* tentative => astrapy2 port

* astrapy 2 rc2

* actual astrapy2 dependency (lockfile todo)

* regenerate poetry.lock

* bump to astrapy 2.0.1

* bump client version to 3.0.0

* also api's pyproject bumped

* revert rootlevel dependency, leaving its astra-asisstants version untouched again

* edit client version to 2.5.0