forgejo: don’t enable the testing apk repo

Alpine has forgejo in main repo now.

roles/forgejo/tasks/main.yml

@@ -1,15 +1,8 @@
-- name: Add testing repo
-  lineinfile:
-    path: /etc/apk/repositories
-    line: '@testing https://dl-cdn.alpinelinux.org/alpine/edge/testing'
-  register: repo
-
 - name: Install forgejo
   package:
-    update_cache: '{{ repo.changed }}'
     name:
-      - forgejo@testing
+      - forgejo
-      - forgejo-runner@testing
+      - forgejo-runner
       - podman
 
 - name: Create nginx site