[MEX-532] added gas config for deprecated farm type

[claudiulataretu]

Reasoning

• missing gas limits configs for deprecated farm type

Proposed Changes

• added missing gas limits config into default config file

How to test

query ExitFarm {
    exitFarm(
        farmAddress: "erd1qqqqqqqqqqqqqpgqqjpfmappkpzq6kdju3mkqepk3d2kcymu0n4srd45sa",
        farmTokenID: "EGLDMEXFL-2ed783",
        farmTokenNonce: 60,
        amount: "2452220725944649483",
        exitAmount: "2452220725944649483"
    ) {
        gasLimit
        data
    }
}

• query should return transaction