Assign per1234 to all Dependabot PRs

As primary maintainer of the project, GitHub user per1234 is responsible for managing Dependabot pull requests.

Configuring Dependabot to automatically set the assignment will be more convenient.

Author: per1234

.github/dependabot.yml

@@ -6,13 +6,17 @@ updates:
   # Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/dependabot/README.md
   # See: https://docs.github.com/en/code-security/supply-chain-security/keeping-your-actions-up-to-date-with-dependabot
   - package-ecosystem: github-actions
+    assignees:
+      - per1234
     directory: / # Check the repository's workflows under /.github/workflows/
     schedule:
       interval: daily
     labels:
       - "topic: infrastructure"
 
   - package-ecosystem: pip
+    assignees:
+      - per1234
     directory: reportsizedeltas/tests
     schedule:
       interval: daily