Use larger runner for kind GHA

Author: jrhouston

.github/workflows/acceptance_tests_kind.yaml

@@ -34,7 +34,7 @@ env:
 jobs:
   acceptance_tests_kind:
     if: ${{ github.repository_owner == 'hashicorp' }}
-    runs-on: custom-linux-medium
+    runs-on: custom-linux-large
     strategy:
       # Don't cancel all in-progress and queued jobs in the matrix if any job in the matrix fails.
       # That will be helpful to catch any issues related to a particular Kubernetes version.