Fix the yemllint errors

Signed-off-by: Noah Knegt <git@noahknegt.com>

roles/setup/tasks/system/zsh.yml

@@ -17,7 +17,7 @@
   git:
     repo: https://github.com/zsh-users/zsh-syntax-highlighting.git
     dest: /home/noahk/.oh-my-zsh/custom/plugins/zsh-syntax-highlighting
-    update: yes
+    update: true
 
 - name: Install zsh-autosuggestions
   become: true
@@ -25,7 +25,7 @@
   git:
     repo: https://github.com/zsh-users/zsh-autosuggestions.git
     dest: /home/noahk/.oh-my-zsh/custom/plugins/zsh-autosuggestions
-    update: yes
+    update: true
 
 - name: Install starship
   become: true