[BUG] Breaking changes in Qiskit: sampler, and runtime.

[ValentinS4t1qbit]

Issue: Bug Report

Currently, calls to IBMConnection.job_submit fail for sampler, as Qiskit was updated. This causes the T4 hands-on notebook cell to be broken (NB: simulators are no longer provided by Qiskit Quantum, fixing this won't change that fact).

It seems the whole Sampler class may have been revamped: https://docs.quantum.ibm.com/api/qiskit-ibm-runtime/qiskit_ibm_runtime.SamplerV2

A "migration" guide for Qiskit runtime V2 is available here: https://docs.quantum.ibm.com/migration-guides/qiskit-runtime

It may be that Estimator went through similar changes.

Current Behavior / minimal example