Add cache valid time and do not iterate over packages

tasks/apt.yml

@@ -7,24 +7,24 @@
 
 - name: Install essential packages
   package:
-    name: "{{ item }}"
+    name:
+      - vim
+      - emacs
+      - git
+      - htop
+      - zsh
+      - python
+      - python3
+      - screen
+      - tmux
+      - dnsutils
+      - stow
+      - mosh
+      - fail2ban
+      - tig
+      - sudo
+      - aptitude
+      - curl
     state: present
+    cache_valid_time: yes
   become: true
-  with_items:
-    - vim
-    - emacs
-    - git
-    - htop
-    - zsh
-    - python
-    - python3
-    - screen
-    - tmux
-    - dnsutils
-    - stow
-    - mosh
-    - fail2ban
-    - tig
-    - sudo
-    - aptitude
-    - curl