Bump services/cctp-relayer/external/evm-cctp-contracts

Bumps [services/cctp-relayer/external/evm-cctp-contracts](https://github.com/circlefin/evm-cctp-contracts) from `817397d` to `e4e6e2f`.
- [Release notes](https://github.com/circlefin/evm-cctp-contracts/releases)
- [Commits](circlefin/evm-cctp-contracts@817397d...e4e6e2f)

---
updated-dependencies:
- dependency-name: services/cctp-relayer/external/evm-cctp-contracts
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>