Update to solders 0.22.0 and remove GetStakeActivationResp RPC #924

Job	Run time
lint	37s
tests (tests/integration/test_async_http_client.py)	1m 29s
tests (tests/integration/test_async_token_client.py)	1m 32s
tests (tests/integration/test_http_client.py)	1m 30s
tests (tests/integration/test_token_client.py)	1m 39s
tests (tests/integration/test_websockets.py)	2m 44s
tests (tests/integration/test_recent_performance_samples.py)	2m 22s
tests (tests/integration/test_memo.py)	1m 32s
tests (tests/unit)	42s
tests (src)	53s
test	0s
coverage	0s
	15m 0s

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