bump grub revision to latest upstream

gnulib too

gnulib...

resources/grub/patches/0003-specifically-use-python3-in-gentpl.py.patch

@@ -1,4 +1,4 @@
-From 49cb9863828b90d1dcbd107f4ce4987d0567b837 Mon Sep 17 00:00:00 2001
+From d30654becf183e14e5c5c8d8216ee52a6437f233 Mon Sep 17 00:00:00 2001
 From: Leah Rowe <leah@libreboot.org>
 Date: Sun, 13 Mar 2022 18:08:57 +0000
 Subject: [PATCH 3/3] specifically use python3 in gentpl.py
@@ -8,7 +8,7 @@ Subject: [PATCH 3/3] specifically use python3 in gentpl.py
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/gentpl.py b/gentpl.py
-index c86550d4f..cb89cef37 100644
+index 9f51e4fb6..22cf4439c 100644
 --- a/gentpl.py
 +++ b/gentpl.py
 @@ -1,4 +1,4 @@