Synth-example: Fix version

Fixes: #143

Author: diwic

synth-example/Cargo.toml

@@ -6,4 +6,4 @@ edition = "2018"
 
 [dependencies]
 dasp = { version = "0.11", features = ["signal"] }
-alsa = { path = "..", version = "0.6" }
+alsa = { path = "..", version = "0.10" }