message: Corrected return value type in create_claim_offer Python wrapper function
diff: @@ -103,7 +103,7 @@ async def issuer_create_and_store_revoc_reg(wallet_handle: int,
  async def issuer_create_claim_offer(wallet_handle: int,
  schema_json: str,
  issuer_did: str,
  - prover_did: str) -> (str, str):
  + prover_did: str) -> str:
  """
  Create claim offer in Wallet.
  