build(deps): bump redshift-connector from 2.0.914 to 2.0.915

Bumps [redshift-connector](https://github.com/aws/amazon-redshift-python-driver) from 2.0.914 to 2.0.915.
- [Release notes](https://github.com/aws/amazon-redshift-python-driver/releases)
- [Changelog](https://github.com/aws/amazon-redshift-python-driver/blob/master/CHANGELOG.md)
- [Commits](aws/amazon-redshift-python-driver@v2.0.914...v2.0.915)

---
updated-dependencies:
- dependency-name: redshift-connector
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>