Having checksums.txt file content as part of release body

[sethiyash]

Hi Team,
We are using Goreleaser extensively for release. Thanks, for such a fantastic tool. Although in our efforts to further automate our release process and remove some of the manual work.

I'm looking to print the content of the checksum file in the release body as this is the format we follow for release notes and we want to print the checksums as part of the release notes.

# this is how we are generating checksum file
checksum:
  name_template: 'checksums.txt'
  algorithm: sha256
  disable: false
...
# as part of release I'm trying to print content of checksum file in footer
release:
  # Repo in which the release will be created.
  github:
    owner: sethiyash
    name: imgpkg

  draft: true
  prerelease: auto

  footer: |
    # :open_file_folder: Files Checksum
    ```
    # how to print checksum.txt file here?
    ```
  name_template: "{{.Tag}}"
  disable: false

[caarlos0]

#4064 would this work?

[sethiyash]

Definitely. Thanks for adding this feature with lightning speed.