Within notional-wrapped-fcash package.json, an outdated OZ version is used (which has known vulnerabilities, see https://snyk.io/vuln/npm%3A%40openzeppelin%2Fcontracts).
However, as Brownie is used to install dependencies and compile the contracts, using this outdated version declared in the package.json does not impose any risks so far.
Anyway, to prevent any issues in the future (e.g. using solely hardhat to compile and deploy the contracts), upgrade the used OZ packages within the package.json to the latest versions.
See similar findings:
https://github.com/code-423n4/2022-06-notional-coop/blob/main/notional-wrapped-fcash/package.json#L14
Consider using the latest OZ packages within package.json.
