Improve SSL mode testing #2029

Job	Run time
Build and test docker images	11m 15s
Build aarch64-apple-darwin	2m 19s
Build debian-x86_64	2m 2s
Build x86_64-apple-darwin	6m 35s
Build x86_64-pc-windows-msvc	5m 11s
Lint and Unit test	9s
Build x86_64-unknown-linux-gnu	10m 12s
Test with PG 11-3.0-alpine sslmode=disable	39s
Test on macOS-latest	44s
Test with PG 14-3.3-alpine sslmode=disable	2m 18s
Test on windows-latest	34s
Test with PG 15-3.3 sslmode=require	38s
Test on ubuntu-latest	46s
Package ${{ matrix.target }}	1s
CI Finished	1s
	43m 24s

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