Need to do this in two steps to make CI happy

Author: trask

.github/workflows/assign-reviewers.yml

@@ -0,0 +1,24 @@
+# assigns reviewers to pull requests in a similar way as CODEOWNERS, but doesn't require reviewers
+# to have write access to the repository
+# see .github/component_owners.yaml for the list of components and their owners
+name: Assign reviewers
+
+on:
+  # pull_request_target is needed instead of just pull_request
+  # because repository write permission is needed to assign reviewers
+  pull_request_target:
+
+permissions:
+  contents: read
+
+jobs:
+  assign-reviewers:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: trask/component-owners@02dfde3c03025c064cc6961975e28a42e81c394a # main
+        with:
+          # this repository is using this action to request doc review
+          assign-owners: false