Updates the `ibmq_dd_strategies_qss.ipynb` notebook to not use the
retired `"ibmq_brisbane_qpu"`, and gets circuit duration estimates for
`ibmq_compile_*.ipynb` to fix the recent failing notebook checks.

Note: After #1334,
setting circuit durations is no longer done manually. Instead, as
recommended, the notebooks use the `.estimate_duration()` method to
determine the circuit duration value (at least until the duration
setting is supported/needed in `qiskit`). This is necessary as
`qiskit`'s timeline drawer seems to call `load_program()` which [then
checks
`program._duration`](https://github.com/Qiskit/qiskit/blob/aedc6f0aaad5b4a51d972b276017c64a3f9c0a19/qiskit/visualization/timeline/core.py#L263)

---------

Signed-off-by: Bharath <bharath.thotakura@infleqtion.com>