allows set postgis version for macos #213

Job	Run time
parametrized (ubuntu-latest)	45s
default (ubuntu-latest)	42s
parametrized (windows-latest)	2m 27s
default (ubuntu-24.04)	44s
parametrized (macos-latest)	2m 14s
default (ubuntu-22.04)	43s
default (ubuntu-20.04)	37s
default (macos-latest)	3m 50s
default (macos-13)	5m 6s
default (macos-14)	3m 37s
default (windows-latest)	2m 59s
default (windows-2019)	2m 58s
default (windows-2022)	3m 11s
	29m 53s

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