bump version to 0.5.12 (#920) #60

Job	Run time
run_checks / Standalone general-superstaq coverage check	41s
run_checks / Flake8 check	1m 1s
run_checks / Pytest and Coverage check (3.8)	2m 24s
run_checks / Format check	1m 5s
run_checks / Pytest and Coverage check (3.9)	2m 22s
run_checks / Pytest and Coverage check (3.10)	2m 22s
run_checks / Pytest and Coverage check (3.11)	2m 21s
run_checks / Lint check	2m 2s
run_checks / Type check	2m 12s
run_checks / Pytest and Coverage check (3.12)	2m 35s
run_checks / Minimum cirq version coverage check	1m 18s
run_checks / Standalone qiskit-superstaq coverage check	1m 14s
run_checks / Pytest macOS	2m 49s
run_checks / Build docs	2m 21s
run_checks / Pytest Windows	2m 23s
run_checks / Notebook check for qiskit-superstaq	2m 35s
run_checks / Requirements check	2m 0s
run_checks / Notebook check for cirq-superstaq	2m 34s
publish_and_release	1s
	36m 20s

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