CI: adjust cross_platform_tests, enable long paths on Windows

Author: flemosr

.github/workflows/ci.yml

@@ -40,6 +40,12 @@ jobs:
         toolchain: [stable, beta, nightly]    
     steps:
       - uses: actions/checkout@v4
+      - name: Enable long paths on Windows
+        if: runner.os == 'Windows'
+        run: |
+          New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" `
+            -Name "LongPathsEnabled" -Value 1 -PropertyType DWORD -Force
+        shell: pwsh
       - uses: hecrj/setup-rust-action@v2
         with:
           rust-version: ${{ matrix.toolchain }}