Out of sync practice exercises

[github-actions]

Out of sync practice exercises have been detected:

Command: configlet sync --tests --docs --metadata --filepaths

Output:

Checking exercises...
[warn] metadata: unsynced: allergies
[warn] metadata: unsynced: bob
[warn] metadata: unsynced: etl
[warn] metadata: unsynced: gigasecond
[warn] metadata: unsynced: kindergarten-garden
[warn] metadata: unsynced: matrix
[warn] metadata: unsynced: phone-number
[warn] metadata: unsynced: pig-latin
[warn] metadata: unsynced: reverse-string
[warn] metadata: unsynced: space-age
[warn] metadata: unsynced: triangle
[warn] some exercises have unsynced metadata