Remove private key file reference from ansible.cfg; update hosts file with absolute path for private key; add playbooks for installing tools and updating OS

ansible/update_os.yml

@@ -0,0 +1,22 @@
+---
+- name: Update all packages on Ubuntu (interactive)
+  hosts: all
+  become: yes
+  tasks:
+    - name: Update apt cache
+      ansible.builtin.apt:
+        update_cache: yes
+      register: apt_update_result
+
+    - name: Show apt update output
+      ansible.builtin.debug:
+        var: apt_update_result.stdout_lines
+
+    - name: Upgrade all packages to the latest version
+      ansible.builtin.apt:
+        upgrade: dist
+      register: apt_upgrade_result
+
+    - name: Show apt upgrade output
+      ansible.builtin.debug:
+        var: apt_upgrade_result.stdout_lines