Fix flaky tests

Signed-off-by: dubo-dubon-duponey <dubodubonduponey+github@pm.me>

tests/plan/outputs/directories/relative.cue

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"dagger.io/dagger"
+)
+
+dagger.#Plan & {
+	actions: data: dagger.#WriteFile & {
+		input:       dagger.#Scratch
+		path:        "/test_relative"
+		permissions: 0o600
+		contents:    "foobar"
+	}
+
+	outputs: directories: test_relative: {
+		contents: actions.data.output
+		dest:     "./out"
+	}
+}