deps: Drop Python 3.9 #8088

Job	Run time
pytest-ubuntu-py311-gcc11-cxxnoomp-base	47m 50s
pytest-ubuntu-py310-gcc14-omp-base	46m 13s
pytest-ubuntu-py312-gcc12-cxxomp-adjoint	41m 56s
pytest-ubuntu-py312-gcc12-cxxomp-base	58m 30s
pytest-ubuntu-py311-gcc11-cxxnoomp-adjoint	34m 52s
pytest-ubuntu-py310-gcc14-omp-adjoint	33m 52s
pytest-ubuntu-py311-gcc10-noomp-base	44m 17s
pytest-ubuntu-py312-gcc13-omp-base	52m 56s
pytest-ubuntu-py311-gcc10-noomp-adjoint	31m 49s
pytest-ubuntu-py312-gcc13-omp-adjoint	37m 35s
pytest-ubuntu-py310-gcc9-omp-adjoint	33m 51s
pytest-ubuntu-py310-gcc9-omp-base	46m 39s
pytest-docker-py310-gcc-omp-base	40m 26s
pytest-docker-py310-gcc-omp-adjoint	30m 52s
pytest-osx-py312-clang-omp-base	28m 13s
pytest-docker-py310-icx-omp-adjoint	31m 0s
pytest-docker-py310-icx-omp-base	33m 20s
	11h 14m 11s

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