fix: missing test for DB2 compilation

## Description

Currently, there is no test covering the DB2 compilation flow. However, the DB2 compilation step is still executed during the release process, which can lead to a failure if there are regressions or issues.

### Impact

Release may fail unexpectedly due to undetected issues in the DB2 compilation step.

Lack of test coverage reduces confidence in DB2 support.

### Proposed Action

Add a test (unit/integration as appropriate) to cover DB2 compilation.

Ensure this test is included in the CI pipeline prior to the release step.