[Bug?] Build step throws error requesting that the updated workflow file be committed despite this already having been done

When running my workflow I'm currently receiving the following error:

Prior to this step I changed to the workflows directory shown in the error and ran 'ls' to verify that the deploy.yml file is present, which it is.

Looking at where this error is thrown in pipeline.ts, shown above, this leads me to believe that "this.workflowFile.toYaml()" is somehow different to "readFileSync(this.workflowPath, 'utf8')".

Any idea what the cause of this might be?