Fix to nil in report formatted report

[miguelgonrod]

Today report failed with this log

/home/runner/work/buildfarm-tools/buildfarm-tools/database/scripts/lib/report_formatter.rb:172:in `block in test_regressions_known': undefined method `[]' for nil:NilClass (NoMethodError)

      tables[project][iss_report.first['status'].downcase] += "| `#{iss_report.first['github_issue']}` | #{iss_report.first['priority']} | #{jobs_str} | #{errors_str} |\n"
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	from /home/runner/work/buildfarm-tools/buildfarm-tools/database/scripts/lib/report_formatter.rb:161:in `each'
	from /home/runner/work/buildfarm-tools/buildfarm-tools/database/scripts/lib/report_formatter.rb:161:in `test_regressions_known'
	from ./format_report.rb:15:in `<main>'
Error: Process completed with exit code 1.

As I understood it is because the script got a project in downcase

[miguelgonrod]

Something weird is happenning, it is showing the space but empty