package/fetchmail: bump version to 6.4.39

Release notes:
https://sourceforge.net/p/fetchmail/mailman/message/58797299/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/fetchmail/fetchmail.hash

@@ -1,4 +1,4 @@
-# From https://sourceforge.net/p/fetchmail/mailman/message/58731594/
-sha256  a6cb4ea863ac61d242ffb2db564a39123761578d3e40d71ce7b6f2905be609d9  fetchmail-6.4.38.tar.xz
+# From https://sourceforge.net/p/fetchmail/mailman/message/58797299/
+sha256  75109a1f307b538155fa05f5ef298e8298cb4deae95aed24c16b38d36ff0a186  fetchmail-6.4.39.tar.xz
 # Locally computed:
 sha256  6d87443b61041067a5eddb2cabf8aebff15b8b40771ad6b5e4754e607ec21b39  COPYING

package/fetchmail/fetchmail.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 FETCHMAIL_VERSION_MAJOR = 6.4
-FETCHMAIL_VERSION = $(FETCHMAIL_VERSION_MAJOR).38
+FETCHMAIL_VERSION = $(FETCHMAIL_VERSION_MAJOR).39
 FETCHMAIL_SOURCE = fetchmail-$(FETCHMAIL_VERSION).tar.xz
 FETCHMAIL_SITE = https://downloads.sourceforge.net/project/fetchmail/branch_$(FETCHMAIL_VERSION_MAJOR)
 FETCHMAIL_LICENSE = GPL-2.0; some exceptions are mentioned in COPYING