Update icons to new nf-md codes in nerdfonts v3

Signed-off-by: Knut Ahlers <knut@ahlers.me>

.config/i3blocks/disk

@@ -9,7 +9,7 @@ CRIT = 90.0
 MOUNT_BLACKLIST = ['/dev', '/efi', '/proc', '/run', '/sys', '/tmp']
 FS_BLACKLIST = ['//', 'cgroup', 'dev',
                 'fusectl', 'overlay', 'proc', 'run', 'sys', 'tmpfs']
-ICON = '\ufaed'
+ICON = '\U000f02ca'
 
 
 class Disk(Block):

.config/i3blocks/mondash

@@ -8,7 +8,7 @@ from block import *
 
 import requests
 
-ICON = '\ufa6d'
+ICON = '\U000f056e'
 MONDASH_URL = 'https://mondash.org/{dashid}'
 STATUS_COLOR = {
     'OK': COLOR_SUCCESS,