yse actions/checkout@v2 instead of v1 (#62)

Author: nighca

.github/workflows/tag.yml

@@ -11,7 +11,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
     - name: Create tag
       run: |
         tagName="v$(jq '.version' package.json | sed "s/\"//g")"