Merge commit '6273416292090b2f6bfda33f070cea325a1759df' into glitch-soc/merge-upstream

Conflicts:
- `.github/workflows/build-nightly.yml`:
  Upstream modified this file close to a line modified by glitch-soc to
  disable the ARMv64 builder (as glitch-soc doesn't have one).
  Ported upstream's changes.
- `.github/workflows/build-releases.yml`:
  Upstream modified this file close to lines changed by glitch-soc to
  change the Docker image repositories used (only ghcr, and based on the
  organization's name).
  Ported upstream's changes.

.github/workflows/build-releases.yml

@@ -16,6 +16,8 @@ jobs:
       use_native_arm64_builder: false
       push_to_images: |
         ghcr.io/${{ github.repository_owner }}/mastodon
+      # Do not use cache when building releases, so apt update is always ran and the release always contain the latest packages
+      cache: false
       # Only tag with latest when ran against the latest stable branch
       # This needs to be updated after each minor version release
       flavor: |