GHA: Do blobless clone on Windows+Mac

Builds on Windows and macOS require git rev-list to properly embed
full version number. Perform blobless checkout to reduce the impact
somewhat.

.github/workflows/ci.yml

@@ -64,6 +64,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
       with:
+        depth: 0
+        filter: 'blob:none'
         submodules: recursive
     - name: Install ccache
       uses: hendrikmuhs/[email protected]
@@ -87,6 +89,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
       with:
+        depth: 0
+        filter: 'blob:none'
         submodules: recursive
     - uses: microsoft/setup-msbuild@v2
     - uses: nuget/setup-nuget@v2