Collapse list of connection options in README #245

Job	Run time
Test against Ruby 3.0 / ActiveModel 6.1	21s
Test against Ruby 3.0 / ActiveModel 7.0	20s
Test against Ruby 3.0 / ActiveModel 7.1	1m 36s
Test against Ruby 3.1 / ActiveModel 6.1	18s
Test against Ruby 3.1 / ActiveModel 7.0	18s
Test against Ruby 3.1 / ActiveModel 7.1	25s
Test against Ruby 3.1 / ActiveModel 7.2	22s
Test against Ruby 3.2 / ActiveModel 6.1	22s
Test against Ruby 3.2 / ActiveModel 7.0	21s
Test against Ruby 3.2 / ActiveModel 7.1	28s
Test against Ruby 3.2 / ActiveModel 7.2	27s
Test against Ruby 3.2 / ActiveModel 8.0	24s
Test against Ruby 3.3 / ActiveModel 6.1	17s
Test against Ruby 3.3 / ActiveModel 7.0	18s
Test against Ruby 3.3 / ActiveModel 7.1	24s
Test against Ruby 3.3 / ActiveModel 7.2	22s
Test against Ruby 3.3 / ActiveModel 8.0	22s
Test against Ruby 3.4.0-preview2 / ActiveModel 7.1	1m 38s
Test against Ruby 3.4.0-preview2 / ActiveModel 7.2	1m 44s
Test against Ruby 3.4.0-preview2 / ActiveModel 8.0	1m 46s
	12m 33s

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