fix(github_events)!: follow RULES.md

Author: davidB

github_events/outputs/package/published.4.json

@@ -8,6 +8,11 @@
   },
   "customData": {
     "github": {
+      "package": {
+        "package_version": {
+          "package_url": "ghcr.io/aaaaa-aaa/aaaaa-aaaaaaaaa:1.1.1"
+        }
+      },
       "repository": {
         "url": "https://api.github.com/repos/aaaaa-aaa/aaaaa-aaaaaaaaa"
       },
@@ -21,7 +26,6 @@
       "user": "aaaaaa-aaaaaaa[aaa]"
     },
     "id": "pkg:oci/aaaaa-aaaaaaaaa@aaa111:aaa111aa1a11a1aa11a1aa11111aa11a1a111aaa11a111a111a1a1a1a11a1111?repository_url=ghcr.io/aaaaa-aaa&tag=1.1.1",
-    "source": "ghcr.io/aaaaa-aaa/aaaaa-aaaaaaaaa:1.1.1",
     "type": "artifact"
   }
 }

github_events/transformer.vrl

@@ -137,6 +137,11 @@ if exists(.body.package) {
       }
       pkgs = [purl_to_string!(purl_obj)]
     }
+    custom_data.github.package = {
+      "package_version" : {
+        "package_url" : .body.package.package_version.package_url
+      }
+    }
     bodies = map_values(pkgs) -> |pkg|{
       {
         "context": {
@@ -150,7 +155,6 @@ if exists(.body.package) {
         },
         "subject": {
           "id": pkg,
-          "source": .body.package.package_version.package_url,
           "type": "artifact",
           "content": {
             "user": sender,