update grub to 2.14

This brings these extra changes:

* eaa3b8f0f Bump version to 2.15
* d38d6a1a9 Release 2.14
* 35bfd6c47 build: Add grub-core/tests/crypto_cipher_mode_vectors.h file to EXTRA_DIST
* ac042f3f5 configure: Print a more helpful error if autoconf-archive is not installed
* e37d02158 kern/ieee1275/openfw: Add a check for invalid partition number
* f94eae0f8 grub-mkimage: Do not generate empty SBAT metadata
* 1aa0dd0c0 configure: Defer check for -mcmodel=large until PIC/PIE checks are done
* ff1edd975 util/grub-mkimagexx: Stop generating unaligned appended signatures
* 51ebc6f67 tests: Add functional tests for ecb/cbc helpers
* caaf50b9a osdep/aros/hostdisk: Fix use-after-free bug during MsgPort deletion
* 18f08826f kern/efi/sb: Enable loading GRUB_FILE_TYPE_CRYPTODISK_ENCRYPTION_KEY and GRUB_FILE_TYPE_CRYPTODISK_DETACHED_HEADER

NOTE: This patch was reversed:

* ac042f3f5 configure: Print a more helpful error if autoconf-archive is not installed

Because it quite unhelpfully broke the build.

Signed-off-by: Leah Rowe <leah@libreboot.org>

config/grub/default/patches/0006-don-t-print-error-if-module-not-found.patch

@@ -1,34 +0,0 @@
-From 1d72be25322037c703c5fa95ee29b8ee7b7d7106 Mon Sep 17 00:00:00 2001
-From: Leah Rowe <leah@libreboot.org>
-Date: Sun, 5 Nov 2023 16:36:22 +0000
-Subject: [PATCH 6/8] don't print error if module not found
-
-still set grub_errno accordingly, and otherwise
-behave the same. in libreboot, we remove a lot of
-modules but then rely on loading a grub.cfg
-provided by a distro; in almost all cases that works,
-but also in almost all cases, that will try to load
-a module we don't actually need, but then it prints
-a message. this can annoy some users, so silence it.
-
-Signed-off-by: Leah Rowe <leah@libreboot.org>
----
- grub-core/kern/dl.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/grub-core/kern/dl.c b/grub-core/kern/dl.c
-index eac3ea48d..6d67ba54f 100644
---- a/grub-core/kern/dl.c
-+++ b/grub-core/kern/dl.c
-@@ -510,7 +510,7 @@ grub_dl_resolve_name (grub_dl_t mod, Elf_Ehdr *e)
- 
-   s = grub_dl_find_section (e, ".modname");
-   if (!s)
--    return grub_error (GRUB_ERR_BAD_MODULE, "no module name found");
-+    return (grub_errno = GRUB_ERR_BAD_MODULE);
- 
-   mod->name = grub_strdup ((char *) e + s->sh_offset);
-   if (! mod->name)
--- 
-2.47.3
-