DFA tests should use alpha build

Author: jrhouston

.github/workflows/acceptance_test_dfa.yaml

@@ -13,7 +13,7 @@ on:
     inputs:
       terraformVersion:
         description: Terraform version
-        default: 1.12.0
+        default: v1.12.0-alpha20250312
 
 jobs:
   acceptance_tests:
@@ -29,6 +29,6 @@ jobs:
       - name: Run Tests
         env:
           TF_ACC: 1
-          TF_ACC_TERRAFORM_VERSION: ${{ github.event.inputs.terraformVersion || '1.12.0' }}
+          TF_ACC_TERRAFORM_VERSION: ${{ github.event.inputs.terraformVersion || 'v1.12.0-alpha20250312' }}
         run: |
           go test -v -run '^TestAccKubernetesDeferredActions' ./kubernetes/test-dfa