fix: Require web3>=7.0.0 to avoid breaking API changes

Fixes a bug that some users were facing that was pulling in an outdated version of the web3 library that uses different naming conventions than the exposed API from the SDK.

Author: eureka-cpu

example/uv.lock

@@ -17,7 +17,7 @@ dependencies = [
   "anyio>=4.10.0",
   "pyxdg>=0.28",
   "rlp>=1.2.0",
-  "web3>=4.7.2",
+  "web3>=7.0.0",
 ]
 
 [project.urls]