fix: add error message parameter to Wait.until function #32

All 30 tests pass in 39s

30 tests +30 30 ✔️ +30 39s ⏱️ +39s
11 suites +11   0 💤 ±  0
11 files +11   0 ❌ ±  0

Results for commit 78a0cf9. ± Comparison against earlier commit 2ee10c8.