Update busybox-w32 version

this should support fractional sleep now

(cherry picked from commit c4f29fd)
ref #20152

Author: tkelman

Makefile

@@ -626,7 +626,7 @@ endif
 	chmod a+x ./nsis/makensis.exe
 ifeq ($(USE_GPL_LIBS), 1)
 	cd $(JULIAHOME)/dist-extras && \
-	$(JLDOWNLOAD) busybox.exe http://frippery.org/files/busybox/busybox-w32-FRP-483-g31277ab.exe && \
+	$(JLDOWNLOAD) busybox.exe http://frippery.org/files/busybox/busybox-w32-FRP-875-gc6ec14a.exe && \
 	chmod a+x busybox.exe
 endif
 

contrib/windows/msys_build.sh

@@ -162,7 +162,7 @@ if [ -z "`which make 2>/dev/null`" ]; then
 fi
 
 if ! [ -e usr/bin/busybox.exe ]; then
-  f=busybox-w32-FRP-483-g31277ab.exe
+  f=busybox-w32-FRP-875-gc6ec14a.exe
   echo "Downloading $f"
   $curlflags -o usr/bin/busybox.exe http://frippery.org/files/busybox/$f
 fi