ci(bun): restore setup-bun default to 'latest' to avoid breaking existing workflows; pin 1.3.0 only in build-package composite used by scanners

Author: riatzukiza

.github/actions/build-package/action.yml

@@ -7,8 +7,10 @@ outputs:
 runs:
   using: composite
   steps:
-    - name: Setup Bun
+    - name: Setup Bun (1.3.0 for strict build script)
       uses: ./.github/actions/setup-bun
+      with:
+        bun-version: '1.3.0'
 
     - name: Verify Bun
       shell: bash

.github/actions/setup-bun/action.yml

@@ -2,9 +2,9 @@ name: setup-bun
 description: Setup Bun with optional version pinning and basic cache
 inputs:
   bun-version:
-    description: Version of Bun to install (e.g., 1.3.0)
+    description: Version of Bun to install (e.g., 1.3.1 or latest)
     required: false
-    default: '1.3.0'
+    default: 'latest'
 runs:
   using: composite
   steps: