Implement SSPI authentication #539

Job	Run time	Billable time
test-postgres (9.5)	3m 53s	0s
test-platforms (3.8, ubuntu-latest, asyncio)	3m 11s	0s
test-postgres (9.6)	4m 9s	0s
test-platforms (3.8, ubuntu-latest, uvloop)	3m 10s	0s
test-postgres (10)	3m 41s	0s
test-platforms (3.8, macos-latest, asyncio)	6m 0s	0s
test-postgres (11)	3m 42s	0s
test-platforms (3.8, macos-latest, uvloop)	2m 37s	0s
test-platforms (3.8, windows-latest, asyncio)	5m 1s	0s
test-postgres (12)	3m 20s	0s
test-platforms (3.9, ubuntu-latest, asyncio)	3m 7s	0s
test-postgres (13)	3m 39s	0s
test-platforms (3.9, ubuntu-latest, uvloop)	3m 8s	0s
test-postgres (14)	3m 39s	0s
test-platforms (3.9, macos-latest, asyncio)	2m 39s	0s
test-postgres (15)	3m 30s	0s
test-platforms (3.9, macos-latest, uvloop)	2m 39s	0s
test-postgres (16)	3m 28s	0s
test-platforms (3.9, windows-latest, asyncio)	5m 0s	0s
test-platforms (3.10, ubuntu-latest, asyncio)	2m 52s	0s
test-platforms (3.10, ubuntu-latest, uvloop)	3m 6s	0s
test-platforms (3.10, macos-latest, asyncio)	2m 46s	0s
test-platforms (3.10, macos-latest, uvloop)	2m 56s	0s
test-platforms (3.10, windows-latest, asyncio)	5m 25s	0s
test-platforms (3.11, ubuntu-latest, asyncio)	3m 6s	0s
test-platforms (3.11, ubuntu-latest, uvloop)	3m 3s	0s
test-platforms (3.11, macos-latest, asyncio)	2m 46s	0s
test-platforms (3.11, macos-latest, uvloop)	3m 2s	0s
test-platforms (3.11, windows-latest, asyncio)	5m 37s	0s
test-platforms (3.12, ubuntu-latest, asyncio)	3m 58s	0s
test-platforms (3.12, macos-latest, asyncio)	2m 57s	0s
test-platforms (3.12, windows-latest, asyncio)	5m 0s	0s
Regression Tests	1s	0s
	1h 56m 8s	0s

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