Fix warning message if Cygwin GNU Make is used.

Update url according to LODE current version (4.2.1) because
the previous one does not support mkdir -p, which is used
by libcdr and libqxp now.

Change-Id: I7e50e46d2101a3cbd757d683f2d3550f896fc750
Reviewed-on: https://gerrit.libreoffice.org/65882
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

configure.ac

@@ -12619,8 +12619,8 @@ to install a pre-compiled binary make for Win32
 
  mkdir -p /opt/lo/bin
  cd /opt/lo/bin
- wget https://dev-www.libreoffice.org/bin/cygwin/make-85047eb-msvc.exe
- cp make-85047eb-msvc.exe make
+ wget https://dev-www.libreoffice.org/bin/cygwin/make-4.2.1-msvc.exe
+ cp make-4.2.1-msvc.exe make
  chmod +x make
 
 to install from source: