stellar-etl v2.6.1

What's Changed

• Use release draft changelog (#287) @amishas157
• Update github workflow to update changelog on every PR merge (#286) @amishas157
• Update to use updated datastore (#282) @chowbao
• Fix logging issues in stellar-etl writing to airflow (#281) @chowbao
• Add check for GCS file upload exist (#280) @chowbao
• Update bugs related to transaction fees (#279) @chowbao
• Update git command in build docker image workflow (#278) @amishas157
• Build docker image using github actions (#276) @amishas157
• Use a fix length of sha for docker tags (#277) @amishas157

Full Changelog: v2.6.0...v2.6.1