perf: eliminate runs-on input

Author: andhreljaKern

.github/workflows/tf_plan_apply.yml

@@ -2,11 +2,6 @@ name: 'OpenTofu: Plan/Apply'
 
 on:
   workflow_call:
-    inputs:
-      runs_on:
-        description: 'Runner JSON string'
-        default: '"ubuntu-latest"'
-        type: string
     outputs:
       tf_plan_exit_code:
         description: 'OpenTofu Plan exit code'
@@ -24,7 +19,7 @@ permissions:
 jobs:
   tofu-plan:
     name: 'OpenTofu Plan'
-    runs-on: ${{ fromJSON(inputs.runs_on) }}
+    runs-on: ["self-hosted", "${{ github.event_name == 'pull_request' && github.event.pull_request.base.ref || github.ref_name }}" ]
     environment: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.ref || github.ref_name }}
     env:
       ENVIRONMENT_NAME: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.ref || github.ref_name }}
@@ -97,7 +92,7 @@ jobs:
     name: 'OpenTofu Apply'
     needs: [tofu-plan]
     if: ${{ (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || github.event.pull_request.merged) && needs.tofu-plan.outputs.tf_plan_exit_code == 2 }}
-    runs-on: ${{ fromJSON(inputs.runs_on) }}
+    runs-on: ["self-hosted", "${{ github.event_name == 'pull_request' && github.event.pull_request.base.ref || github.ref_name }}" ]
     environment: ${{ github.ref_name }}
     env:
       ENVIRONMENT_NAME: ${{ github.ref_name }}