No mail after successful upload from GitHub Actions

Five days ago, I've created a GitHub Actions workflow on a repository under https://github.com/EoflaOE/msbuild-offline-packaging. It let me make a source package using a script that I made and upload it to Launchpad without waiting for hours. Apparently, that upload was accepted and I received an e-mail.

Today, I went to test the same workflow on https://github.com/EoflaOE/dotnet-sdk-offline-packaging to upload the source package to Launchpad, and as soon as it finished, nothing happened afterwards. I didn't receive any mail saying that it was accepted or rejected.

I've made sure that I've used the same GPG private key and passphrase. Here's the output of the successful upload:

Checking signature on .changes
Checking signature on .dsc
Uploading to ppa (via ftp to ppa.launchpad.net):
  Uploading msbuild_16.9-0ppa1.dsc: done.
  Uploading msbuild_16.9.orig.tar.xz: done.
  Uploading msbuild_16.9-0ppa1.debian.tar.xz: done.
  Uploading msbuild_16.9-0ppa1_source.buildinfo: done.
  Uploading msbuild_16.9-0ppa1_source.changes: done.
gpg: ../msbuild_16.9-0ppa1_source.changes: Error checking signature from 1230C6CE36C1AEA9: SignatureVerifyError: 0
Successfully uploaded packages.
gpg: ../msbuild_16.9-0ppa1.dsc: Error checking signature from 1230C6CE36C1AEA9: SignatureVerifyError: 0

And here's the attempted upload from today:

Checking signature on .changes
Checking signature on .dsc
Uploading to ppa (via ftp to ppa.launchpad.net):
  Uploading msbuild-dotnetsdk_16.9-0ppa1.dsc: done.
  Uploading msbuild-dotnetsdk_16.9.orig.tar.xz: done.
  Uploading msbuild-dotnetsdk_16.9-0ppa1.debian.tar.xz: done.
  Uploading msbuild-dotnetsdk_16.9-0ppa1_source.buildinfo: done.
  Uploading msbuild-dotnetsdk_16.9-0ppa1_source.changes: done.
gpg: ../msbuild-dotnetsdk_16.9-0ppa1_source.changes: Error checking signature from 1230C6CE36C1AEA9: SignatureVerifyError: 0
gpg: ../msbuild-dotnetsdk_16.9-0ppa1.dsc: Error checking signature from 1230C6CE36C1AEA9: SignatureVerifyError: 0
Successfully uploaded packages.

PPA in question: https://launchpad.net/~eofla/+archive/ubuntu/msbuild (ppa:eofla/msbuild)