require iroh-net now

it used to require quinn for this

iroh-blobs/Cargo.toml

@@ -30,7 +30,7 @@ hex = "0.4.3"
 iroh-base = { version = "0.15.0", features = ["redb"], path = "../iroh-base" }
 iroh-io = { version = "0.6.0", features = ["stats"] }
 iroh-metrics = { version = "0.15.0", path = "../iroh-metrics", optional = true }
-iroh-net = { version = "0.15.0", path = "../iroh-net", optional = true }
+iroh-net = { version = "0.15.0", path = "../iroh-net" }
 num_cpus = "1.15.0"
 parking_lot = { version = "0.12.1", optional = true }
 postcard = { version = "1", default-features = false, features = ["alloc", "use-std", "experimental-derive"] }