Fix incorrect Base version #343

Job	Run time
downgrade (1.10, core)	15s
test (core, 1.10, ubuntu-latest)	19m 1s
downgrade (1.10, downstream)	19s
test (core, 1.10, macos-latest)	20m 35s
downgrade (1.10, wrappers)	17s
test (core, 1.10, windows-latest)	40m 26s
test (core, 1, ubuntu-latest)	29m 14s
test (core, 1, macos-latest)	24m 17s
test (core, 1, windows-latest)	42m 45s
test (downstream, 1.10, ubuntu-latest)	13m 0s
test (downstream, 1.10, macos-latest)	8m 39s
test (downstream, 1.10, windows-latest)	17m 17s
test (downstream, 1, ubuntu-latest)	22m 38s
test (downstream, 1, macos-latest)	15m 59s
test (downstream, 1, windows-latest)	26m 0s
test (wrappers, 1.10, ubuntu-latest)	11m 55s
test (wrappers, 1.10, macos-latest)	7m 51s
test (wrappers, 1.10, windows-latest)	15m 24s
test (wrappers, 1, ubuntu-latest)	19m 34s
test (wrappers, 1, macos-latest)	19m 38s
test (wrappers, 1, windows-latest)	23m 39s
	6h 18m 43s

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