fix: ExceptionGroup is built-in for 3.11+

Author: fubuloubu

silverback/runner.py

@@ -11,7 +11,6 @@
 from ape_ethereum.ecosystem import keccak
 from eth_utils import to_hex
 from ethpm_types import EventABI
-from exceptiongroup import ExceptionGroup
 from packaging.specifiers import SpecifierSet
 from packaging.version import Version
 from pydantic import TypeAdapter