fix: bump web3 upper bound to allow security fix GHSA-5hr4-253g-cpx2

The web3 dependency pin (<=7.10.0) was blocking the security fix for
SSRF via CCIP Read (GHSA-5hr4-253g-cpx2) which shipped in web3==7.15.0.

This change updates the constraint from:
  web3>=7.6.0,<=7.10.0
to:
  web3>=7.6.0,<8.0.0

Allowing users to install the patched web3 version while maintaining
compatibility with the existing API.

Fixes #636

Author: Kubudak90

python/pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     "urllib3>=2.2.3",
     "aiohttp>=3.11.16",
     "aiohttp-retry>=2.9.1",
-    "web3>=7.6.0,<=7.10.0",
+    "web3>=7.6.0,<8.0.0",
     "solana>=0.36.6",
     "solders>=0.26.0",
     "nest-asyncio>=1.6.0,<2",