Remove apalis + redis => use postgresql instead

crates/steep-server/Cargo.toml

@@ -26,6 +26,6 @@ metrics = { workspace = true }
 metrics-exporter-prometheus = { workspace = true }
 devcontainer-rs = { path = "../devcontainer-rs" }
 tempfile = "3"
-apalis = { workspace = true }
-apalis-redis = { workspace = true }
-redis = { workspace = true }
+toasty = { workspace = true }
+toasty-cli = { workspace = true }
+jiff = { workspace = true }