ci: Revert Swift test script device configuration removal

This was changed while making the tests pass when running on macOS, but
it is unclear why the original CI script was changed. Presumably we
should run the tests with a fixed device on the CI.

debc1c7#diff-76ed074a9305c04054cdebb9e9aad2d818052b07091de1f20cad0bbac34ffb52L62

Author: dcalhoun

Makefile

@@ -62,7 +62,7 @@ build-swift-package: build
 	$(call XCODEBUILD_CMD, build)
 
 test-swift-package: build
-	swift test
+	$(call XCODEBUILD_CMD, test)
 
 release:
 	@echo "--- :rocket: Starting GutenbergKit Release Process"