Merge branch '438888-downcase-checksum-when-searching-for-nuget-symbol' into 'master'

Downcase checksum in with_file_sha256 nuget symbol scope

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143262



Merged-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Jonas Larsen <jlarsen@gitlab.com>
Approved-by: Aakriti Gupta <agupta@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Reviewed-by: Aakriti Gupta <agupta@gitlab.com>
Co-authored-by: moaz-khalifa <mkhalifa@gitlab.com>