message: chore(issuer): certificate claim returns transaction receipt
diff: -import { Event as BlockchainEvent, ContractTransaction, ethers, BigNumber } from 'ethers';
  +import {
  + Event as BlockchainEvent,
  + ContractTransaction,
  + ethers,
  + BigNumber,
  + ContractReceipt
  +} from 'ethers';
  import { Timestamp } from '@energyweb/utils-general';
  @@ -207,7 +213,7 @@ export class Certificate implements ICertificate {
  amount?: BigNumber,
  from?: string,
  to?: string
  - ): Promise<ContractTransaction> {
  + ): Promise<ContractReceipt> {
  const { activeUser, registry } = this.blockchainProperties;
  const registryWithSigner = registry.connect(activeUser);
  @@ -231,9 +237,9 @@ export class Certificate implements ICertificate {
  encodedClaimData
  );
  - await claimTx.wait();
  + const txReceipt = await claimTx.wait();
  - return claimTx;
  + return txReceipt;
  }
  async transfer(to: string, amount?: BigNumber, from?: string): Promise<ContractTransaction> {
  