deps: bump pymongo from 4.13.1 to 4.15.4 in /backend#10

dependabot[bot] wants to merge 1 commit intomainSurya2Developer/Splitzy:mainfrom

dependabot/pip/backend/pymongo-4.15.4Surya2Developer/Splitzy:dependabot/pip/backend/pymongo-4.15.4Copy head branch name to clipboard