package/gnuplot: bump version to 5.4.2

Signed-off-by: Michael Fischer <mf@go-sys.de>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/gnuplot/gnuplot.hash

@@ -1,6 +1,6 @@
-# From https://sourceforge.net/projects/gnuplot/files/gnuplot/5.4.1/
-md5  80f75b684f1175d36cd6908ff1ceb588  gnuplot-5.4.1.tar.gz
-sha1  bb1cd34f8ec0357eccef70122f0fd531ced5dd29  gnuplot-5.4.1.tar.gz
+# From https://sourceforge.net/projects/gnuplot/files/gnuplot/5.4.2/
+md5  2050ca477199a591543bc968aba7d899  gnuplot-5.4.2.tar.gz
+sha1  2e076b29f38bfcb841cb5eb3377fd1a469ced1ac  gnuplot-5.4.2.tar.gz
 # Locally computed
-sha256  6b690485567eaeb938c26936e5e0681cf70c856d273cc2c45fabf64d8bc6590e  gnuplot-5.4.1.tar.gz
+sha256  e57c75e1318133951d32a83bcdc4aff17fed28722c4e71f2305cfc2ae1cae7ba  gnuplot-5.4.2.tar.gz
 sha256  895928ec0735cca1c8cec42656c7e314a065d0242813bb8693c0c1bf61fd4e4d  Copyright

package/gnuplot/gnuplot.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GNUPLOT_VERSION = 5.4.1
+GNUPLOT_VERSION = 5.4.2
 GNUPLOT_SITE = http://downloads.sourceforge.net/project/gnuplot/gnuplot/$(GNUPLOT_VERSION)
 GNUPLOT_LICENSE = gnuplot license (open source)
 GNUPLOT_LICENSE_FILES = Copyright