feat: slack workflow conclusion notifications (#160) #362

All 4 tests pass in 0s

1 files ±0 1 suites ±0 0s ⏱️ ±0s
4 tests ±0 4 ✅ ±0 0 💤 ±0 0 ❌ ±0
8 runs ±0 8 ✅ ±0 0 💤 ±0 0 ❌ ±0

Results for commit 33942dd. ± Comparison against earlier commit ecbcd70.