bump version to 0.4.26 #2305

Job	Run time
Minimum cirq version coverage check	2m 25s
Pytest and Coverage check (3.8)	4m 35s
Standalone general-superstaq coverage check	49s
Standalone qiskit-superstaq coverage check	1m 26s
Pytest and Coverage check (3.9)	5m 1s
Pytest and Coverage check (3.10)	3m 44s
Pytest and Coverage check (3.11)	6m 54s
Format check	1m 3s
Build docs	5m 43s
Flake8 check	52s
Lint check	3m 24s
Notebook check	8m 39s
Type check	3m 5s
Pytest macOS	4m 50s
Pytest Windows	7m 0s
Requirements check	2m 0s
	1h 1m 30s

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