Skip exec unit tests on Bazel windows targets

codex-rs/exec/BUILD.bazel

@@ -4,4 +4,8 @@ codex_rust_crate(
     name = "exec",
     crate_name = "codex_exec",
     test_tags = ["no-sandbox"],
+    unit_test_target_compatible_with = select({
+        "@platforms//os:windows": ["@platforms//:incompatible"],
+        "//conditions:default": [],
+    }),
 )