Update bt-decode requirement

Author: thewhaleking

pyproject.toml

@@ -10,7 +10,7 @@ dependencies = [
   "wheel",
   "asyncstdlib~=3.13.0",
   "bittensor-wallet>=2.1.3",
-  "bt-decode==0.4.0",
+  "bt-decode==v0.5.0-a0",
   "scalecodec~=1.2.11",
   "websockets>=14.1",
   "xxhash"