also run plan for PRs

.gitea/workflows/apply-master.yaml

@@ -4,6 +4,9 @@ on:
   push:
     branches:
       - master
+  pull_request:
+    branches:
+      - master
 env:
   AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
   AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
@@ -16,7 +19,7 @@ env:
   TF_VAR_tfstate_backend_role_arn: ${{ vars.TF_VAR_tfstate_backend_role_arn }}
   TF_PLUGIN_CACHE_DIR: ${{ github.workspace }}/.terraform.d/plugin-cache
 jobs:
-  nix:
+  terraform:
     strategy:
       fail-fast: true
       matrix: