chore: remap branch for ami build

Author: samrose

.github/workflows/ami-release-nix.yml

@@ -3,8 +3,7 @@ name: Release AMI Nix
 on:
   push:
     branches:
-      - sam/2-stage-ami-nix
-    paths:
+      - sam/nix-and-conventional-ami
       - '.github/workflows/ami-release-nix.yml'
       - 'common-nix.vars.pkr.hcl'
   workflow_dispatch: