fstools: update to latest git HEAD

b4e25d5 libblkid-tiny: fix symbol collision with full libblkid

Fixes: FS#2691, FS#2692
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit 5f4244150f99d7bf72a96ec4d9c1055386e66b53)

package/system/fstools/Makefile

@@ -12,9 +12,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/fstools.git
-PKG_MIRROR_HASH:=4411400675131aada73911c4afc80149485e2686479bc6479acff253eb25e9a7
-PKG_SOURCE_DATE:=2019-12-20
-PKG_SOURCE_VERSION:=111a43f8c64683e79859dcb3f4b7aa437e24502b
+PKG_MIRROR_HASH:=8cb1187b129a91537ff8f5b2751226e206f073742bd5c3673a0025f713d08203
+PKG_SOURCE_DATE:=2019-12-22
+PKG_SOURCE_VERSION:=b4e25d54035c5092e8e9b46ab63500e95ac8c730
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0