Forward secret to publish job (#428)

Author: JR-Morgan

.github/workflows/pr.yml

@@ -1,6 +1,9 @@
 name: "Specklepy test"
 on:
   workflow_call:
+    secrets:
+      CODECOV_TOKEN:
+        required: true
   pull_request:
     branches:
       - "main"

.github/workflows/publish.yml

@@ -9,6 +9,8 @@ on:
 jobs:
   test:
     uses: "./.github/workflows/pr.yml"
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
   publish-package:
     name: "Build and Publish Python Package"