Enable nightly execution of kind test (#2178)

Author: sheneska

.github/workflows/acceptance_tests_kind.yaml

@@ -12,6 +12,8 @@ on:
       terraformVersion:
         description: Terraform version
         default: 1.4.0
+  schedule:
+    cron: '0 21 * * *'
 
 env:
   KUBECONFIG: ${{ github.workspace }}/.kube/config
@@ -42,3 +44,6 @@ jobs:
           TESTARGS: -run '${{ github.event.inputs.runTests }}'
         run: |
           make testacc
+
+
+