chore(deps): update actions/checkout action to v3 (#115)

Author: renovate[bot]

.github/workflows/publish.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         token: ${{ secrets.SOURCERY_RELEASE_TOKEN }}