Bump dotnet/sdk from 8.0 to 9.0 in /docker#80

dependabot[bot] wants to merge 1 commit intomainCapstoneProjectCMC/backend:mainfrom

dependabot/docker/docker/main/dotnet/sdk-9.0CapstoneProjectCMC/backend:dependabot/docker/docker/main/dotnet/sdk-9.0Copy head branch name to clipboard