Execute against pull_request_target (#65)

This ensures we're not running our CI against the head of the repository branch
Also enable workflow_dispatch

.github/workflows/test.yml

@@ -7,7 +7,7 @@ on:
     paths:
       - '**/*.go'
       - '.github/workflows/test.yml'
-  pull_request:
+  pull_request_target:
     types:
       - opened
       - reopened
@@ -18,14 +18,16 @@ on:
     paths:
       - '**/*.go'
       - '.github/workflows/test.yml'
-
+  workflow_dispatch:
+
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
 jobs:
   test:
-    if: github.event.pull_request.draft == false
+    if: github.event.pull_request_target.draft == false
     name: runner / gotest
     runs-on: ubuntu-22.04
     container: ghcr.io/runatlantis/testing-env:latest
@@ -38,7 +40,7 @@ jobs:
   # This job builds the website, starts a server to serve it, and then uses
   # muffet (https://github.com/raviqqe/muffet) to perform the link check.
   website_link_check:
-    if: github.event.pull_request.draft == false
+    if: github.event.pull_request_target.draft == false
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3