refactor: Simplify inventory client parsing

This helps to drop an UMA dependency, and is arguably nicer because it
doesn't corce the js Object to and from a string type.

src/relayer/RelayerConfig.ts

@@ -1,4 +1,4 @@
-import { BigNumber, toBNWei, assert, toBN, replaceAddressCase, ethers } from "../utils";
+import { BigNumber, toBNWei, assert, toBN, ethers } from "../utils";
 import { CommonConfig, ProcessEnv } from "../common";
 import * as Constants from "../common/Constants";
 import { InventoryConfig } from "../interfaces";
@@ -65,7 +65,9 @@ export class RelayerConfig extends CommonConfig {
     this.slowDepositors = SLOW_DEPOSITORS
       ? JSON.parse(SLOW_DEPOSITORS).map((depositor) => ethers.utils.getAddress(depositor))
       : [];
-    this.inventoryConfig = RELAYER_INVENTORY_CONFIG ? JSON.parse(RELAYER_INVENTORY_CONFIG) : {};
+    this.inventoryConfig = JSON.parse(
+      RELAYER_INVENTORY_CONFIG.replace(/0x[a-fA-F0-9]{40}/g, ethers.utils.getAddress) ?? "{}"
+    );
     this.minRelayerFeePct = toBNWei(MIN_RELAYER_FEE_PCT || Constants.RELAYER_MIN_FEE_PCT);
 
     if (Object.keys(this.inventoryConfig).length > 0) {

src/utils/index.ts

@@ -27,8 +27,6 @@ export {
 export type { Block, TransactionResponse, TransactionReceipt, Provider } from "@ethersproject/abstract-provider";
 
 export { config } from "dotenv";
-
-export { replaceAddressCase } from "@uma/common";
 export { Logger } from "@uma/financial-templates-lib";
 
 // TypeChain exports used in the bot.