Prepare for release of 1.1.1v #281

Job	Run time
basic_clang	4m 34s
basic_gcc	3m 19s
check_docs	10s
check_update	51s
minimal	3m 2s
check-ansi	1m 24s
no-deprecated	3m 15s
address_ub_sanitizer	10m 27s
buildtest	4m 7s
enable_non-default_options	4m 13s
external-test-pyca (1.51.0, 3.9)	6m 55s
external-tests	2m 15s
legacy	4m 25s
no-shared (ubuntu-latest)	2m 55s
no-shared (macos-latest)	8m 21s
out-of-source-and-install (ubuntu-latest)	4m 30s
out-of-source-and-install (macos-latest)	9m 12s
out-of-tree_build	1m 54s
threads_sanitizer	2m 12s
	1h 18m 1s

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