chore(deps): update dependency eth-account to v0.13.4

Author: renovate[bot]

requirements.txt

@@ -15,7 +15,7 @@ cytoolz==0.12.1
 decorator==5.1.1
 entrypoints==0.4
 eth-abi==2.2.0
-eth-account==0.5.9
+eth-account==0.13.4
 eth-hash==0.5.1
 eth-keyfile==0.5.1
 eth-keys==0.3.4