main: use correct format specifiers for uint32_t

Fixes clang-tidy warnings like these:

/willow/main/system.c:89:51: error: format specifies type 'unsigned long' but the argument has type 'uint32_t' (aka 'unsigned int') [clang-diagnostic-format]
    ESP_LOGI(TAG, "restarting after %lu seconds", delay);
                                    ~~~           ^
                                    %u

Reported-by: clang-tidy

main/ota.c

@@ -43,7 +43,7 @@ void ota_task(void *data)
     pt_new = esp_ota_get_next_update_partition(NULL);
 
     if (pt_boot != pt_cur) {
-        ESP_LOGW(TAG, "boot partition (offset='0x%08lu') does not match running partition (offset='0x%08lu')",
+        ESP_LOGW(TAG, "boot partition (offset='0x%08" PRIu32 "') does not match running partition (offset='0x%08" PRIu32 "')",
                  pt_boot->address, pt_cur->address);
     }
 

main/system.c

@@ -86,10 +86,10 @@ void restart_delayed(void)
         delay = 6;
     }
 
-    ESP_LOGI(TAG, "restarting after %lu seconds", delay);
+    ESP_LOGI(TAG, "restarting after %" PRIu32 " seconds", delay);
 
     if (lvgl_port_lock(lvgl_lock_timeout)) {
-        lv_label_set_text_fmt(lbl_ln4, "Restarting in %lu seconds", delay);
+        lv_label_set_text_fmt(lbl_ln4, "Restarting in %" PRIu32 " seconds", delay);
         lv_obj_clear_flag(lbl_ln4, LV_OBJ_FLAG_HIDDEN);
         lvgl_port_unlock();
     }

main/was.c

@@ -343,7 +343,7 @@ static void IRAM_ATTR cb_ws_event(const void *arg_evh, const esp_event_base_t *b
             init_was();
             break;
         default:
-            ESP_LOGD(TAG, "unhandled WebSocket event - ID: %lu", id_ev);
+            ESP_LOGD(TAG, "unhandled WebSocket event - ID: %" PRIu32, id_ev);
             break;
     }
 }