chore: update codeowners and catalog-info.yaml to DX (#317)

Author: whitelisab

.github/CODEOWNERS

@@ -1 +1 @@
-* @contentful/team-tundra
+* @contentful/team-tundra @contentful/team-developer-experience

catalog-info.yaml

@@ -1,22 +1,15 @@
-# Backstage documentation
-# https://backstage.io/docs/features/software-catalog/descriptor-format/
 apiVersion: backstage.io/v1alpha1
 kind: Component
 metadata:
   name: contentful.java 
   description: |
-    JavaScript library for Contentful's Delivery and Preview APIs
+    Java library for Contentful's Delivery and Preview APIs
   annotations:
     github.com/project-slug: contentful/contentful.java 
-    contentful.com/service-tier: "unknown" #1, 2, 3, 4
+    contentful.com/service-tier: "4"
   tags:
-    - update-me
-    #need to add sast.yaml to .github/workflows and enable it in polaris dashboard
-    #once that is done this can be changed to sast-enabled
-    - sast-disabled
-    #make this match the value from service-tier above
-    - tier-unknown
+    - tier-4
 spec:
   type: library 
-  lifecycle: production  
-  owner: group:team-tundra
+  lifecycle: production
+  owner: group:team-developer-experience