message: indexer-agent: Fix free stake calculation
diff: @@ -467,7 +467,7 @@ export class Network {
  // Identify how many GRT the indexer has staked
  const stakes = await this.contracts.staking.stakes(this.indexerAddress)
  - const freeStake = stakes.tokensAllocated
  + const freeStake = stakes.tokensStaked
  .sub(stakes.tokensAllocated)
  .sub(stakes.tokensLocked)
  