Enable GitHub Action testing on Darwin and Windows

[docktermj]

See senzing-garage/sz-sdk-go-core#240

Re-enable .github/workflows/go-test-darwn.yaml after the following issue is resolved:

docker-practice/actions-setup-docker#38

[docktermj]

Errors for Windows

❌ Test_RootCmd (0s)
:
       cmd_test.go:63: 
          	Error Trace:	D:/a/init-database/init-database/cmd/cmd_test.go:63
          	Error:      	Received unexpected error:
          	            	CONFIGPATH: Could not find /cfgVariant.json
          	            	For more information, visit https://hub.senzing.com/go-helpers/errors
          	Test:       	Test_RootCmd

❌ TestBasicInitializer_RegisterObserver (0s)
      initializer_test.go:55: 
          	Error Trace:	D:/a/init-database/init-database/initializer/initializer_test.go:55
          	Error:      	Received unexpected error:
          	            	mkdir \C:: The filename, directory name, or volume label syntax is incorrect.
          	Test:       	TestBasicInitializer_RegisterObserver

[docktermj]

Errors for Darwin

❌ Test_RunE (0s)
      cmd_test.go:48: 
          	Error Trace:	/Users/runner/work/init-database/init-database/cmd/cmd_test.go:48
          	Error:      	Received unexpected error:
          	            	CONFIGPATH: Could not find /cfgVariant.json
          	            	For more information, visit https://hub.senzing.com/go-helpers/errors
          	Test:       	Test_RunE