Add cron in the workflows

Signed-off-by: divyansh42 <diagrawa@redhat.com>

.github/workflows/link_check.yml

@@ -6,6 +6,8 @@ on:
   pull_request:
     paths:
       -'**.md'
+  schedule:
+    - cron: '0 0 * * *'  # every day at midnight
 
 jobs:
   markdown-link-check:

.github/workflows/multiple-build.yaml

@@ -2,6 +2,9 @@ name: Multiple container CLI build tests
 on:
   push:
   workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *'  # every day at midnight
+
 env:
   IMAGE_NAME: myimage
   IMAGE_TAG: v1

.github/workflows/verify-push.yaml

@@ -5,6 +5,8 @@ name: Test Build and Push
 on:
   push:
   workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *'  # every day at midnight
 
 env:
   PROJECT_DIR: spring-petclinic