RPM 1.15 conflicts with slack

dnf5 install https://github.com/Foundry376/Mailspring/releases/download/1.15.0/mailspring-1.15.0-0.1.x86_64.rpm
Updating and loading repositories:
Repositories loaded.
 https://github.com/Foundry376/Mailspring/releases/download/1.15.0/mailspring-1.15.0-0.1.x86_64.rpm                                                                                           100% |  30.0 MiB/s | 153.6 MiB |  00m05s
Package                                                                        Arch             Version                                                                         Repository                                        Size
Upgrading:
 mailspring                                                                    x86_64           1.15.0-0.1                                                                      @commandline                                 427.2 MiB
   replacing mailspring                                                        x86_64           1.14.0-0.1                                                                      @commandline                                 432.9 MiB

Transaction Summary:
 Upgrading:          1 package
 Replacing:          1 package

Total size of inbound packages is 154 MiB. Need to download 0 B.
Is this ok [y/N]: y
Running transaction
Transaction failed: Rpm transaction failed.
Warning: skipped OpenPGP checks for 1 package from repository: @commandline
  - file /usr/lib/.build-id/e3/48af15b8a6fcd2c4941da68ed6a01e8c5be38d from install of mailspring-1.15.0-0.1.x86_64 conflicts with file from package slack-4.41.105-0.1.el8.x86_64

I have the same problem too