fix: report concatenation commands as unchanged

The `awk 1` commands assembling the chain, fullchain and all files declared
`changed_when: chain_content.rc == 0`, which holds on every successful run. As a
result the role never reported a converged state, even when no certificate was
touched.

These commands only read files and write to stdout, so mark them as unchanged.
The subsequent copy task remains responsible for reporting an actual change.

Co-authored-by: Copilot <copilot@github.com>

tasks/intermediate_certificate_authority.yaml

@@ -58,7 +58,7 @@
     ansible.builtin.command:
       cmd: awk 1 {{ _chain_files | join(' ') }}
     register: chain_content
-    changed_when: chain_content.rc == 0
+    changed_when: false
     when: _stat_result.stat.exists is defined and
           _stat_result.stat.exists
   - name: Create concatenated chain file
@@ -85,7 +85,7 @@
     ansible.builtin.command:
       cmd: awk 1 {{ _chain_files | join(' ') }}
     register: chain_content
-    changed_when: chain_content.rc == 0
+    changed_when: false
     when: _stat_result.stat.exists is defined and
           _stat_result.stat.exists
   - name: Create concatenated fullchain file
@@ -112,7 +112,7 @@
     ansible.builtin.command:
       cmd: awk 1 {{ _chain_files | join(' ') }}
     register: chain_content
-    changed_when: chain_content.rc == 0
+    changed_when: false
     when: _stat_result.stat.exists is defined and
           _stat_result.stat.exists
   - name: Create concatenated file