chore(deps): update toshimaru/auto-author-assign action to v3 (#116)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/assign-author.yml

@@ -15,4 +15,4 @@ jobs:
 
     steps:
       - name: Assign author
-        uses: toshimaru/auto-author-assign@v2.1.2
+        uses: toshimaru/auto-author-assign@v3.0.0

.github/workflows/auto-assign-pr-author.yml

@@ -13,4 +13,4 @@ jobs:
   assign-author:
     runs-on: ubuntu-latest
     steps:
-      - uses: toshimaru/auto-author-assign@v2.1.2
+      - uses: toshimaru/auto-author-assign@v3.0.0