Run preprod-test for non-draft PR only

.github/workflows/entrypoint_prerelease.yml

@@ -8,10 +8,19 @@ on:
       - ".github/**"
       - "**.md"
 
+# creating a separate concurrency group for each PR
+# so that our "PR checks" are always running for the latest commit in the PR
+# and as PRs are updated we want to make sure "in progress" jobs are killed so we don't waste resources
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
+
 jobs:
   preprod_test:
     name: Pre-prod code testing
     runs-on: ubuntu-latest
+    if: github.event.pull_request.draft == false
     steps:
       - uses: actions/checkout@master
         with:
@@ -35,6 +44,7 @@ jobs:
   build:
     name: Build Python 🐍 distributions
     runs-on: ubuntu-latest
+    if: github.event.pull_request.draft == false
     needs: code_test
     steps:
       - uses: actions/checkout@master