Update Python SDK to 1.20.0 (#264) #1030

Job	Run time
build-lint-test (3.10, windows-latest)	6m 51s
build-lint-test (3.14, windows-latest)	19m 7s
build-lint-test (3.14, ubuntu-latest)	15m 41s
build-lint-test (3.14, macos-intel)	17m 20s
build-lint-test (3.10, ubuntu-latest)	5m 44s
build-lint-test (3.14, macos-arm)	12m 21s
build-lint-test (3.10, macos-intel)	12m 28s
build-lint-test (3.10, macos-arm)	9m 24s
	1h 38m 56s

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