allows set postgis version for macos #212

Job	Run time
parametrized (ubuntu-latest)	1m 55s
default (ubuntu-latest)	38s
parametrized (windows-latest)	2m 37s
default (ubuntu-24.04)	42s
parametrized (macos-latest)	2m 22s
default (ubuntu-22.04)	56s
default (ubuntu-20.04)	53s
default (macos-latest)	4m 0s
default (macos-13)	6m 18s
default (macos-14)	4m 8s
default (windows-latest)	3m 30s
default (windows-2019)	6m 20s
default (windows-2022)	2m 43s
	37m 2s

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