pkg/fatfs: bump version to r0.14b

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 ignores 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(). (appeared at R0.13)
  Fixed some compiler warnings.

  - http://elm-chan.org/fsw/ff/updates.txt

pkg/fatfs/Makefile

@@ -2,7 +2,7 @@ PKG_NAME=fatfs
 # upstream server is very unreliable, instead host the extracted
 # .zip file on GitHub and apply only the upstream patches
 PKG_URL=https://github.com/RIOT-OS/FatFS
-PKG_VERSION=fb99d00924fd17c2d9c0789510852c2c286403ab # R0.14a
+PKG_VERSION=246c97b1eb7f1900eb00d5ed7e3bf4cdb4558039 # r0.14b
 PKG_LICENSE=BSD-1-Clause
 
 include $(RIOTBASE)/pkg/pkg.mk

pkg/fatfs/vendor/include/ffconf.h

@@ -2,7 +2,7 @@
 /  FatFs - Configuration file
 /---------------------------------------------------------------------------*/
 
-#define FFCONF_DEF	80196	/* Revision ID */
+#define FFCONF_DEF	86631	/* Revision ID */
 
 /*---------------------------------------------------------------------------/
 / Function Configurations