Add skip option and remove version_number #479

Job	Run time
Integration Tests (3.8)	20s
Integration Tests (3.8)	16s
Integration Tests (3.9)	16s
Integration Tests (3.9)	24s
Test psycopg2 build version (ubuntu-22.04, 3.8)	1m 22s
Test psycopg2 build version (ubuntu-22.04, 3.8)	1m 22s
Integration Tests (3.10)	9s
Integration Tests (3.10)	26s
Test psycopg2 build version (ubuntu-22.04, 3.11)	1m 21s
Test psycopg2 build version (ubuntu-22.04, 3.11)	1m 21s
Integration Tests (3.11)	7s
Integration Tests (3.11)	12s
Test psycopg2 build version (macos-12, 3.8)	2m 42s
Test psycopg2 build version (macos-12, 3.8)	2m 42s
Test psycopg2 build version (macos-12, 3.11)	2m 13s
Test psycopg2 build version (macos-12, 3.11)	2m 13s
	17m 26s

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