ci: increase git fetch-depth for EasyBuild PR workflow

Author: MangelMaxime

.github/workflows/easybuild-shipit.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           # We need to fetch more than the last commit to be able to generate the changelog based on the commit history.
           # Adapt this value based on your needs.
-          fetch-depth: 100
+          fetch-depth: 2000
       - name: Setup .NET
         uses: actions/setup-dotnet@v5
         with: