fix: correct dep tree snapshots

Previous image parsing and dependency tree generation failed to properly
compare hashes resulting in duplicate digest values being stored and
duplicate image names being generated.

Author: d3vco

test/system/package-managers/__snapshots__/rpm.spec.ts.snap

@@ -8221,7 +8221,6 @@ Object {
           "data": Object {
             "names": Array [
               "registry.access.redhat.com/ubi9/ubi@sha256:c113f67e8e70940af28116d75e32f0aa4ffd3bf6fab30e970850475ab1de697f",
-              "registry.access.redhat.com/ubi9/ubi@sha256:c113f67e8e70940af28116d75e32f0aa4ffd3bf6fab30e970850475ab1de697f",
             ],
           },
           "type": "imageNames",
@@ -11208,7 +11207,6 @@ Object {
           "data": Object {
             "names": Array [
               "registry.access.redhat.com/ubi10-beta/ubi@sha256:4b4976d86eefeedab6884c9d2923206c6c3c2e2471206f97fd9d7aaaecbc04ac",
-              "registry.access.redhat.com/ubi10-beta/ubi@sha256:4b4976d86eefeedab6884c9d2923206c6c3c2e2471206f97fd9d7aaaecbc04ac",
             ],
           },
           "type": "imageNames",