fix(ci): set release mode: replace to make reruns idempotent

Without this, a workflow rerun against an existing release aborts after
uploading the first asset with:

  422 Validation Failed [{Resource:ReleaseAsset Field:name
  Code:already_exists Message:}]

The current tag v2.22.3-pulumi.alpha hit this after we rotated the tag
to pick up the git identity fix for tag_go_sdk (de510be). With mode:
replace, goreleaser deletes the existing asset before uploading, so
tag rotations, manual reruns, and concurrent race recovery all become
idempotent.

Validated with goreleaser check v2.15.4.

Author: SoulKyu

pulumi/.goreleaser.pulumi.yml

@@ -61,6 +61,11 @@ checksum:
 
 release:
   draft: false
+  # Replace existing assets on conflict instead of failing with 422
+  # already_exists. Makes tag rotations and manual workflow re-runs
+  # idempotent — without this, a rerun against an existing release
+  # aborts after uploading the first asset (see run on 2026-04-24).
+  mode: replace
   name_template: "{{ .Tag }}"
   header: |
     ## {{ .Tag }}