package/gtkmm3: bump to version 3.24.8

https://gitlab.gnome.org/GNOME/gtkmm/-/blob/3.24.8/NEWS

Signed-off-by: Daniel Lang <dalang@gmx.at>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 7a14ef1d24a43bf14b760b76870b30927e1bbb84)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gtkmm3/gtkmm3.hash

@@ -1,5 +1,5 @@
-# From https://download.gnome.org/sources/gtkmm/3.24/gtkmm-3.24.7.sha256sum
-sha256  1d7a35af9c5ceccacb244ee3c2deb9b245720d8510ac5c7e6f4b6f9947e6789c  gtkmm-3.24.7.tar.xz
+# From https://download.gnome.org/sources/gtkmm/3.24/gtkmm-3.24.8.sha256sum
+sha256  d2940c64922e5b958554b23d4c41d1839ea9e43e0d2e5b3819cfb46824a098c4  gtkmm-3.24.8.tar.xz
 # Locally computed
 sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING
 sha256  ab15fd526bd8dd18a9e77ebc139656bf4d33e97fc7238cd11bf60e2b9b8666c6  COPYING.tools

package/gtkmm3/gtkmm3.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 GTKMM3_VERSION_MAJOR = 3.24
-GTKMM3_VERSION = $(GTKMM3_VERSION_MAJOR).7
+GTKMM3_VERSION = $(GTKMM3_VERSION_MAJOR).8
 GTKMM3_SOURCE = gtkmm-$(GTKMM3_VERSION).tar.xz
 GTKMM3_SITE = https://download.gnome.org/sources/gtkmm/$(GTKMM3_VERSION_MAJOR)
 GTKMM3_LICENSE = LGPL-2.1+ (library), GPL-2.0+ (tools)