Automatic dependency update workflow fails in shell script

[kaklakariada]

See job https://github.com/exasol/glue-connector/actions/runs/9377098985/job/25818124414

Step "Generate Pull Request Comment" fails with message

/home/runner/work/_temp/c4127951-5484-4bde-9655-76513a496e49.sh: line 17: unexpected EOF while looking for matching `''
Error: Process completed with exit code 2.
Error: Unable to process file command 'output' successfully.
Error: Invalid value. Matching delimiter not found 'EOF'

This is caused by the script containing an unmatched ' in line

echo 'Due to restrictions workflow `dependencies_update.yml` can't update other workflows, see https://github.com/exasol/project-keeper/issues/578 for details.' >> "$GITHUB_OUTPUT"