Change module apt with multiple packages to remove deprecated syntax

tasks/main.yml

@@ -9,13 +9,14 @@
 
   - name: "Install essential packages"
     apt:
-      pkg: '{{ item }}'
+      pkg: '{{ packages }}'
       state: 'present'
       update_cache: yes
-    with_items:
-      - 'alien'
-      - 'libaio1'
-      - 'bc'
+    vars:
+      packages:
+        - 'alien'
+        - 'libaio1'
+        - 'bc'
 
   - name: "Check current status"
     shell: 'ls /u01/app/oracle/product'