Add back fetch depth

Author: dstansby

.github/workflows/ci.yaml

@@ -33,7 +33,8 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: recursive
-          fetch-tags: true # required for version resolution
+          fetch-depth: 0 # required for version resolution
+          fetch-tags: true
 
       - name: Set up Conda
         uses: conda-incubator/[email protected]