fix: [config.php] file permission after changes fixes #7229
fix: [config.php] file permission after changes fixes #7229

- will revert to the permissions before the save
- caused by the create -> rename cycle that backs up server settings on each change actually creating a new file instead of modifying it

SteveClement/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP