certbot(role): don't use certbot__version_spec anymore as its not used

roles/certbot/meta/argument_specs.yaml

@@ -1,15 +1,6 @@
 argument_specs:
   main:
     options:
-      certbot__version_spec:
-        description: >-
-          The version specification to use for installing the `certbot` package.
-          The provided version specification will be used like the following:
-          `cerbot={{ certbot__version_spec }}*`. This makes it possible to e.g.
-          specify until a minor version (like `1.3.`) and then have patch
-          versions be installed automatically (like `1.3.1` and so on).
-        type: str
-        required: true
       certbot__acme_account_email_address:
         description: The E-Mail address to give to certbot for the ACME account.
         type: str

roles/certbot/tasks/main/install.yaml

@@ -6,14 +6,6 @@
 
 - name: make sure the `certbot` package is installed
   ansible.builtin.apt:
-    name: certbot={{ certbot__version_spec }}*
-    state: present
-    allow_change_held_packages: true
-    update_cache: true
-  become: true
-
-- name: apt-mark hold `certbot`
-  ansible.builtin.dpkg_selections:
     name: certbot
-    selection: hold
+    state: present
   become: true