Fix incorrect Base version (#520) #344

Job	Run time
downgrade (1.10, core)	17s
test (core, 1.10, ubuntu-latest)	18m 45s
downgrade (1.10, downstream)	17s
test (core, 1.10, macos-latest)	19m 40s
downgrade (1.10, wrappers)	17s
test (core, 1.10, windows-latest)	29m 44s
test (core, 1, ubuntu-latest)	29m 34s
test (core, 1, macos-latest)	23m 38s
test (core, 1, windows-latest)	43m 14s
test (downstream, 1.10, ubuntu-latest)	12m 51s
test (downstream, 1.10, macos-latest)	8m 35s
test (downstream, 1.10, windows-latest)	17m 15s
test (downstream, 1, ubuntu-latest)	22m 46s
test (downstream, 1, macos-latest)	16m 6s
test (downstream, 1, windows-latest)	26m 39s
test (wrappers, 1.10, ubuntu-latest)	11m 48s
test (wrappers, 1.10, macos-latest)	8m 28s
test (wrappers, 1.10, windows-latest)	15m 50s
test (wrappers, 1, ubuntu-latest)	19m 43s
test (wrappers, 1, macos-latest)	11m 49s
test (wrappers, 1, windows-latest)	23m 1s
	6h 0m 17s

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