Revert "Only trigger the publish workflow manually"

This reverts commit 26fc39b.

Author: pvdrz

.github/workflows/publish.yml

@@ -1,8 +1,10 @@
-# To trigger this:
-# - go to Actions > Publish
-# - click the Run Workflow dropdown in the top-right
-name: Publish
-on: workflow_dispatch
+# This is triggered after the Release workflow successfully completes its run
+on:
+  workflow_run:
+    workflows:
+      - Release
+    types:
+      - completed
 env:
   CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
 jobs: