bump version to 4.5.9 #1694

All 829 tests pass, 1 skipped in 1m 10s

128 files +1 128 suites +1 1m 10s ⏱️ +8s
830 tests +5 829 ✔️ +5 1 💤 ±0 0 ❌ ±0
831 runs +5 830 ✔️ +5 1 💤 ±0 0 ❌ ±0

Results for commit ef245f2. ± Comparison against earlier commit 560c66d.