test: allow external_access_plan run on windows #35267

Job	Run time
Check cargo fmt	45s
Check License Header	2m 17s
cargo check	7m 55s
build with wasm-pack	2m 52s
cargo test (macos)	11m 25s
cargo test (macos-aarch64)	11m 20s
Verify MSRV (Min Supported Rust Version)	9m 1s
Verify Vendored Code	52s
cargo test (win64)	22m 4s
cargo test (amd64)	11m 51s
cargo test datafusion-cli (amd64)	4m 10s
cargo doc	4m 51s
cargo test doc (amd64)	16m 55s
cargo examples (amd64)	13m 55s
Run sqllogictest with Postgres runner	3m 59s
cargo test pyarrow (amd64)	3m 7s
verify benchmark results (amd64)	12m 58s
check Cargo.toml formatting	2m 57s
clippy	6m 12s
check configs.md and ***_functions.md is up-to-date	3m 15s
cargo test hash collisions (amd64)	28m 31s
	3h 1m 12s

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