ERM-2981 Standardise use of external url validator library across ERM… #742

All 247 tests pass in 3m 22s

    1 files ±0   35 suites ±0 3m 22s ⏱️ +5s
247 tests ±0 247 ✔️ ±0 0 💤 ±0 0 ❌ ±0
254 runs ±0 254 ✔️ ±0 0 💤 ±0 0 ❌ ±0

Results for commit f43aa8d. ± Comparison against earlier commit 2fdf27c.