prepare release v1.2.0 #670

Job	Run time
rubocop	9s
yard	8s
nixfmt	15s
rspec-matrix (3.0, 3.8)	43s
rspec-matrix (3.0, 3.9)	50s
actionlint	7s
rspec-matrix (3.0, 3.10)	1m 1s
rspec-matrix (3.0, 3.11)	59s
rspec-matrix (3.0, 3.12)	50s
rspec-matrix (3.0, 3.13)	57s
rspec-matrix (3.1, 3.8)	1m 2s
rspec-matrix (3.1, 3.9)	52s
rspec-matrix (3.1, 3.10)	45s
rspec-matrix (3.1, 3.11)	54s
rspec-matrix (3.1, 3.12)	52s
rspec-matrix (3.1, 3.13)	59s
rspec-matrix (3.2, 3.8)	43s
rspec-matrix (3.2, 3.9)	59s
rspec-matrix (3.2, 3.10)	1m 0s
rspec-matrix (3.2, 3.11)	1m 4s
rspec-matrix (3.2, 3.12)	49s
rspec-matrix (3.2, 3.13)	1m 3s
rspec-matrix (3.3, 3.8)	54s
rspec-matrix (3.3, 3.9)	59s
rspec-matrix (3.3, 3.10)	1m 2s
rspec-matrix (3.3, 3.11)	45s
rspec-matrix (3.3, 3.12)	1m 11s
rspec-matrix (3.3, 3.13)	1m 1s
rspec-github-workflow-wrapup-helper	1s
collate-coverage	9s
rspec	1s
	23m 4s

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