release: Add all artifact files to checksums file

[duthils]

As discussed in #1539, the checksum file is missing Linux packages and, as a matter of fact, a few more files like the SBOM artifact.

As stated in the goreleaser documentation for the release.ids setting:

 # IDs of artifacts to include in the checksums file.
 #
 # If left empty, all published binaries, archives, linux packages and source >archives
 # are included in the checksums file.
 ids:
   - foo
   - bar

As a result, before the change, I got this checksum file (simplified) sops-v3.9.0.checksums.txt:

7babe10020e086d7b3c2c6f18c448f86a38be24ac110bce3fb1808b7fe6ab30e  sops-v3.9.0.linux.amd64

After the change:

4b4885d28983e95d0760314322c7e7880860337e59eb8e974ec11391bcc50924  sops-3.9.0-1.x86_64.rpm
7babe10020e086d7b3c2c6f18c448f86a38be24ac110bce3fb1808b7fe6ab30e  sops-v3.9.0.linux.amd64
4afe01e7753e7d69c83475d3573a26885fcc638dde3cebc8a8deef766d047fed  sops-v3.9.0.linux.amd64.spdx.sbom.json
30dca2065cb68204381042c69c0dc54c6cd3b4842674046f2e9fcaa5a79999a6  sops_3.9.0_amd64.deb

For reference, the release.ids value in sops was introduced in the first version of the goreleaser config file: 02de4a8

[felixfontein]

@hiddeco since you know a lot more about goreleaser, can you take a look at this one?

[duthils]

I have rebased the branch