chore(radio): update FatFs to R0.15

[ThomasKuehne]

This updates radio/src/thirdparty/FatFs from version R0.13c to version R0.15

change log from FatFs:

R0.14 (October 14, 2019)
  Added support for 64-bit LBA and GUID partition table (FF_LBA64 = 1)
  Changed some API functions, f_mkfs() and f_fdisk().
  Fixed f_open() function cannot find the file with file name in length of FF_MAX_LFN characters.
  Fixed f_readdir() function cannot retrieve long file names in length of FF_MAX_LFN - 1 characters.
  Fixed f_readdir() function returns file names with wrong case conversion. (appeared at R0.12)
  Fixed f_mkfs() function can fail to create exFAT volume in the second partition. (appeared at R0.12)

R0.14a (December 5, 2020)
  Limited number of recursive calls in f_findnext().
  Fixed old floppy disks formatted with MS-DOS 2.x and 3.x cannot be mounted.
  Fixed some compiler warnings.

R0.14b (April 17, 2021)
  Made FatFs uses standard library <string.h> for copy, compare and search instead of built-in string functions.
  Added support for long long integer and floating point to f_printf(). (FF_STRF_LLI and FF_STRF_FP)
  Made path name parser ignore the terminating separator to allow "dir/".
  Improved the compatibility in Unix style path name feature.
  Fixed the file gets dead-locked when f_open() failed with some conditions. (appeared at R0.12a)
  Fixed f_mkfs() can create wrong exFAT volume due to a timing dependent error. (appeared at R0.12)
  Fixed code page 855 cannot be set by f_setcp().
  Fixed some compiler warnings.

R0.15 (November 6, 2022)
  Changed user provided synchronization functions in order to completely eliminate the platform dependency from FatFs code.
  FF_SYNC_t is removed from the configuration options.
  Fixed a potential error in f_mount when FF_FS_REENTRANT.
  Fixed file lock control FF_FS_LOCK is not mutal excluded when FF_FS_REENTRANT && FF_VOLUMES > 1 is true.
  Fixed f_mkfs() creates broken exFAT volume when the size of volume is >= 2^32 sectors.
  Fixed string functions cannot write the unicode characters not in BMP when FF_LFN_UNICODE == 2 (UTF-8).
  Fixed a compatibility issue in identification of GPT header.

[pfeerick]

cmake --build native -j4 --target libsimulator

target failed, which probably means simu code wasn't also updated accordingly.

i.e.

radio/src/targets/simu/simufatfs.cpp:388:16: error: expected ')' before '*' token
  388 | UINT f_size(FIL* fil)

[raphaelcoeffic]

@ThomasKuehne nice someone is actually taking care of all these nasty updates! Thx!

[pfeerick]

LGTM on TX16, TPro, EL18, X9D+