test: Bump OPA to 1.12.3 (#935)

* test: Bump OPA to 1.12.3

* chore: Bump OPA to 1.12.3

Author: NickLarsenNZ

examples/logging/simple-kafka-cluster-opa-log4j.yaml

@@ -25,7 +25,7 @@ metadata:
   name: simple-opa
 spec:
   image:
-    productVersion: 1.12.2
+    productVersion: 1.12.3
   servers:
     roleGroups:
       default: {}

examples/opa/simple-kafka-cluster-opa-allow-all.yaml

@@ -25,7 +25,7 @@ metadata:
   name: simple-opa
 spec:
   image:
-    productVersion: 1.12.2
+    productVersion: 1.12.3
   servers:
     roleGroups:
       default: {}

tests/test-definition.yaml

@@ -28,7 +28,7 @@ dimensions:
       - 3.9.4
   - name: opa-latest
     values:
-      - 1.8.0
+      - 1.12.3
   - name: upgrade_old
     values:
       - 3.9.1