chore(deps): update dependency eth-keys to v0.5.1

Author: renovate[bot]

requirements.txt

@@ -18,7 +18,7 @@ eth-abi==2.2.0
 eth-account==0.5.9
 eth-hash==0.5.1
 eth-keyfile==0.5.1
-eth-keys==0.3.4
+eth-keys==0.5.1
 eth-rlp==0.2.1
 eth-typing==2.3.0
 eth-utils==1.9.5