ci: Add fetch-tags: true to checkout action

When triggered off of a "push" we need tags to be checked out
in order for the setuptools-scm plugin to find the latest tag.

Author: abxy

.github/workflows/ci.yaml

@@ -21,6 +21,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-tags: true
 
       - uses: actions/setup-python@v5
         with: