Force GitHub Actions to fetch tags

Author: tgeens

.github/workflows/ci.yml

@@ -9,6 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
       - uses: actions/setup-java@v1
         with:
           java-version: 11