Update actions/checkout action to v3 (#207)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Get release notes
         id: release_notes
         run: echo ::set-output name=notes::$(git log -1 --pretty=format:"%b")