fix: funding proposal script

[Reinis-FRP]

Motivation

Funding proposal script was breaking when passing decimal amounts.

Summary

Uses ethers parser to convert the funding amount in the admin proposal script.

Details

There is a error on simulation against a local forked node:

eth_getBlockByNumber

  Invalid JSON-RPC response's result.
  
  Errors: Invalid value undefined supplied to : RpcBlockWithTransactions | null/totalDifficulty: QUANTITY

This can be fixed by upgrading hardhat, but unfortunately it is not compatible with @defi-wonderland/smock that would break the testing. Hence, this PR does not include the hardhat upgrade and must be run locally (yarn upgrade hardhat) before simulating the fork tests.

Testing

Check a box to describe how you tested these changes and list the steps for reviewers to test.

• Ran end-to-end test, running the code as in production
• New unit tests created
• Existing tests adequate, no new tests required
• All existing tests pass
• Untested

Issue(s)

Fixes #XXXX