Fix handling of non-`string` values from repository properties API #7243

Job	Run time
Ruby analysis (macos-latest, linked)	1m 25s
Ruby analysis (ubuntu-latest, nightly-latest)	50s
Ruby analysis (macos-latest, default)	56s
Ruby analysis (ubuntu-latest, default)	52s
Ruby analysis (macos-latest, nightly-latest)	1m 22s
Ruby analysis (ubuntu-latest, linked)	46s
	6m 11s

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