Update build.yml to use 'fetch-depth: 0' for checkout action

Author: akerekes

.github/workflows/build.yml

@@ -9,6 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
     - name: Setup Node.js
       uses: actions/setup-node@v1
       with: