tests: drivers: gpio: gpio_api_1pin: exclude hifive1

Test seems to be failing consistently on `hifive1` board.
See #69350

Signed-off-by: Manuel Argüelles <manuel.arguelles@nxp.com>

tests/drivers/gpio/gpio_api_1pin/testcase.yaml

@@ -10,4 +10,5 @@ tests:
       - mps2/an385
       - mps2/an521/cpu0
       - neorv32
+      - hifive1  # see #69350
     filter: dt_enabled_alias_with_parent_compat("led0", "gpio-leds")