CI: Build dep image every 3 months, remove ppc64le and s390x

Author: andy5995

.github/workflows/deps-linuxdeploy-docker.yml

@@ -11,7 +11,7 @@ on:
     - '**workflows/deps-linuxdeploy-docker.yml'
   workflow_dispatch:
   schedule:
-    - cron: '30 11 17 * *'
+    - cron: '30 11 17 */3 *'
 
 env:
   REGISTRY_IMAGE: andy5995/linuxdeploy
@@ -26,8 +26,7 @@ jobs:
           - linux/amd64
           - linux/arm64
           - linux/arm/v7
-          - linux/ppc64le
-          - linux/s390x
+
       fail-fast: true
     steps:
       -