build

[Python] Add database instances #18918

Job	Run time
cleanups	3s
lint	2m 30s
tests (windows-latest, direct)	6m 5s
tests (macos-latest, terraform)	9m 12s
tests (macos-latest, direct)	4m 2s
tests (ubuntu-latest, direct)	2m 36s
tests (ubuntu-latest, terraform)	9m 57s
tests (windows-latest, terraform)	17m 20s
validate-generated-is-up-to-date	56s
validate-python-codegen	10s
	52m 51s

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