fees: validator voting broken

[conorsch]

Since enabling fees in #4306, we've observed that validator voting is broken:

❯ pcli validator vote cast yes --on 9
Scanning blocks from last sync height 375858 to latest height 375858
[0s] ██████████████████████████████████████████████████       0/0       0/s ETA: 0s
building transaction [1 actions, 0 proofs]...
finished proving in 0.002 seconds [1 actions, 0 proofs, 297 bytes]
broadcasting transaction and awaiting confirmation...
Error: error broadcasting transaction

Caused by:
    status: Internal, message: "Error submitting transaction: code 1, log: failed to deliver transaction: check_stateful failed: fee must be greater than or equal to the transaction base price (supplied: 0, base: 1)", details: [], metadata: MetadataMap { headers: {} }

Let's fix and point-release.

[conorsch]

Resolved by #4554