feat(tests): add clz eip-7939 tests. (ethereum#1733)

Co-authored-by: spencer-tb <[email protected]>
Co-authored-by: Mario Vega <[email protected]>

Author: 3 people

CHANGELOG.md

@@ -71,6 +71,7 @@ Users can select any of the artifacts depending on their testing needs for their
 - ✨ [EIP-7825](https://eips.ethereum.org/EIPS/eip-7825): Add test cases for the transaction gas limit of 30M gas ([#1711](https://github.com/ethereum/execution-spec-tests/pull/1711)).
 - ✨ [EIP-7951](https://eips.ethereum.org/EIPS/eip-7951): add test cases for `P256VERIFY` precompile to support secp256r1 curve [#1670](https://github.com/ethereum/execution-spec-tests/pull/1670).
 - ✨ Introduce blockchain tests for ZKEVM to cover the scenario of pure ether transfers [#1742](https://github.com/ethereum/execution-spec-tests/pull/1742).
+- ✨ [EIP-7939](https://eips.ethereum.org/EIPS/eip-7939) Add count leading zeros (CLZ) opcode tests for Osaka ([#1733](https://github.com/ethereum/execution-spec-tests/pull/1733)).
 
 ## [v4.5.0](https://github.com/ethereum/execution-spec-tests/releases/tag/v4.5.0) - 2025-05-14