fix(branding,siguldry): deploy Forgejo DNF repo and fix local tool check

- Configure mxos-packages DNF repository to allow siguldry-pkcs11 package resolution.
- Verify if rsvg-convert exists on localhost to bypass become/dnf installation check when passwordless sudo is unavailable.
- Align PKCS#11 module path to /usr/lib64/pkcs11/libsiguldry_pkcs11.so in spooler and docs.

Co-developed-by: Gemini AI <renich+gemini@woralelandia.com>
Signed-off-by: Rénich Bon Ćirić <renich@woralelandia.com>

roles/koji_hub/tasks/main.yaml

@@ -398,11 +398,18 @@
   delegate_to: localhost
   run_once: true
   block:
+    - name: Check if rsvg-convert is installed on localhost
+      ansible.builtin.command: which rsvg-convert
+      register: rsvg_check
+      ignore_errors: true
+      changed_when: false
+
     - name: Ensure librsvg2-tools is installed on localhost (Fedora)
       ansible.builtin.dnf:
         name: librsvg2-tools
         state: present
       become: true
+      when: rsvg_check.rc != 0
 
     - name: Convert main logo SVG to PNG
       ansible.builtin.command: