Source Pipedrive: fix connection check failure with no deals

[jtruty]

What

Fixes this issue: https://github.com/airbytehq/airbyte/issues/21944, where the pipedrive source cannot be added if there are no deals present in the pipedrive instance.

How

Adds default to record read to avoid a StopIteration error when there are no records present.

🚨 User Impact 🚨

No breaking changes, will allow users to connect to Pipedrive if they don't have any deal records in their instance.

Pre-merge Checklist

Expand the relevant checklist and delete the others.

Updating a connector

Community member or Airbyter

• [x] Grant edit access to maintainers (instructions)
• [ ] Secrets in the connector's spec are annotated with airbyte_secret
• [ ] Unit & integration tests added and passing. Community members, please provide proof of success locally e.g: screenshot or copy-paste unit, integration, and acceptance test output. To run acceptance tests for a Python connector, follow instructions in the README. For java connectors run ./gradlew :airbyte-integrations:connectors:<name>:integrationTest.
• [ ] Code reviews completed
• [ ] Documentation updated
  • [ ] Connector's README.md
  • [ ] Connector's bootstrap.md. See description and examples
  • [ ] Changelog updated in docs/integrations/<source or destination>/<name>.md including changelog. See changelog example
• [ ] PR name follows PR naming conventions

Airbyter

If this is a community PR, the Airbyte engineer reviewing this PR is responsible for the below items.

• [ ] Create a non-forked branch based on this PR and test the below items on it
• [ ] Build is successful
• [ ] If new credentials are required for use in CI, add them to GSM. Instructions.
• [ ] /test connector=connectors/<name> command is passing
• [ ] New Connector version released on Dockerhub and connector version bumped by running the /publish command described here

[CLAassistant]

All committers have signed the CLA.

[sajarin]

Fixed in https://github.com/airbytehq/airbyte/pull/23539