Parse Server may crash when uploading file without extension
### Impact
Parse Server crashes when uploading a file without extension.
### Patches
A permanent fix has been implemented to prevent the server from crashing.
### Workarounds
There are no known workarounds.
### References
- GitHub security advisory:
https://github.com/parse-community/parse-server/security/advisories/GHSA-792q-q67h-w579
- Patched in Parse Server 6:
https://github.com/parse-community/parse-server/releases/tag/6.3.1
- Patched in Parse Server 5 (LTS):
https://github.com/parse-community/parse-server/releases/tag/5.5.6