Including the same zarf package twice errors on local creation

[mjnagel]

Environment

Device and OS: MBP
App version: 0.6.2
Kubernetes distro being used: N/A

Steps to reproduce

1. Attempt to create a bundle similar to the below:

   kind: UDSBundle
   metadata:
     name: test
     version: 0.0.1
   
   packages:
     - name: dev-postgres1
       repository: ghcr.io/defenseunicorns/packages/uds/dev-postgres
       ref: 0.0.1
     
     - name: dev-postgres2
       repository: ghcr.io/defenseunicorns/packages/uds/dev-postgres
       ref: 0.0.1

Note the duplication of the same package here.

Expected result

Bundle creates successfully.

Actual Result

? Create this bundle? Yes
  ✔  Bundle Validated                                                                                                                                                                                                           

                                                                                                      
  🐕 Fetching Packages                                                                                
                                                                                                      

  ⠸  Fetching dev-postgres1 package layer metadata (package 1 of 2) (1s)                                                                                                                                                            
  ✔  Successfully pulled bundle: dev-postgres1 (66.94 KBs)                                                                                                                                                                          
  ⠸  Fetching dev-postgres2 package layer metadata (package 2 of 2) (1s)                                                                                                                                                         
     ERROR:  Failed to create bundle: sha256:7072b95fb91449996deae9735176ca7288e14bac69bd9b74cd5c1af3777a2257:
             application/vnd.oci.image.manifest.v1+json: already exists

Visual Proof (screenshots, videos, text, etc)

Included above.

Severity/Priority

Low for my scenario, a second bundle could be created.