chore: Unpin web3 dependency

Author: palango

requirements.txt

@@ -3,7 +3,7 @@ rlp>=1.0.0
 coincurve>=8.0.0
 py-solc-x
 semantic_version>=2.8
-web3==5.28.0
+web3>=5.28.0,<6.0.0
 eth-abi>=2.0.0,<4.0.0
 eth-utils>=1.8.4,<3.0.0
 eth-typing>=2.2.1,<4.0.0