dbt: Propagate the dbt return code also when no OpenLineage events are emitted

[blacklight]

Problem

This is a missed corner case follow-up of #2560

dbt-ol should always propagate dbt's return code, even when the script encounters an early exit because no lineage events were processed.

Closes: #2558

Solution

Added return return_code to the early exit statements.

• Your change modifies the core OpenLineage model
• Your change modifies one or more OpenLineage facets

One-line summary:

dbt-ol should propagate the exit code of the underlying dbt process even if no lineage events are emitted.

Checklist

• You've signed-off your work
• Your pull request title follows our guidelines
• Your changes are accompanied by tests (if relevant)
• Your change contains a small diff and is self-contained
• You've updated any relevant documentation (if relevant)
• Your comment includes a one-liner for the changelog about the specific purpose of the change (if necessary)
• You've versioned the core OpenLineage model or facets according to SchemaVer (if relevant)
• You've added a header to source files (if relevant)

---

SPDX-License-Identifier: Apache-2.0
Copyright 2018-2023 contributors to the OpenLineage project

[kacpermuda]

lgtm

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.03%. Comparing base (bc335dc) to head (09e8e46).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2591      +/-   ##
==========================================
- Coverage   84.84%   84.03%   -0.82%     
==========================================
  Files          59       54       -5     
  Lines        3398     3225     -173     
==========================================
- Hits         2883     2710     -173     
  Misses        515      515              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.