[Bug]: Number of architectures built for rpm and deb went from 8 to 2

[tashian]

When we made this change in Nov 2024 (6486532):

--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -53,11 +53,9 @@ builds:
     # - the name of the output binary is step-cli
     << : *BUILD
     id: nfpm
-    goos:
-      - linux
-    goarch:
-      - amd64
-      - arm64
+    targets:
+      - linux_amd64
+      - linux_arm64
     binary: step-cli

After this change, the number of supported architectures for step-cli rpm and deb builds went from 8 to 2.

Before 6486532:

• targets was inherited from &BUILD (all Linux architectures)
• goos/goarch were explicitly set to linux + amd64/arm64
• Since targets takes precedence, GoReleaser used the inherited targets → many architectures

After 6486532:

• targets was explicitly set to linux_amd64, linux_arm64
• This overrides the inherited targets from &BUILD → only 2 architectures

Here's 0.28.0 from our GCS bucket:

And here's 0.28.2:

My proposed fix is to build rpms and debs for all the same arches that we already build binaries for.