package/gst1-plugins-base: security bump to version 1.22.6

Fixes CVE-2023-37328: Heap-based buffer overflow in the subparse subtitle
parser when handling certain SRT subtitle files in GStreamer versions before
1.22.4 / 1.20.7.

https://gstreamer.freedesktop.org/security/sa-2023-0002.html

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 14e2374592284ba61384782ced095ea01ab4dfc5)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gst1-plugins-base/gst1-plugins-base.hash

@@ -1,3 +1,3 @@
-# From https://gstreamer.freedesktop.org/src/gst-plugins-base/gst-plugins-base-1.22.2.tar.xz.sha256sum
-sha256  eb65120c4ee79b7a153c3c1972d5c0158c2151877cc51ec7725bba5749679d49  gst-plugins-base-1.22.2.tar.xz
+# From https://gstreamer.freedesktop.org/src/gst-plugins-base/gst-plugins-base-1.22.6.tar.xz.sha256sum
+sha256  50f2b4d17c02eefe430bbefa8c5cd134b1be78a53c0f60e951136d96cf49fd4b  gst-plugins-base-1.22.6.tar.xz
 sha256  ad2eec519ebd4b5df86ea84dff24ae3bfa2edea846a703b58902dd221ae375db  COPYING

package/gstreamer1/gst1-plugins-base/gst1-plugins-base.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GST1_PLUGINS_BASE_VERSION = 1.22.2
+GST1_PLUGINS_BASE_VERSION = 1.22.6
 GST1_PLUGINS_BASE_SOURCE = gst-plugins-base-$(GST1_PLUGINS_BASE_VERSION).tar.xz
 GST1_PLUGINS_BASE_SITE = https://gstreamer.freedesktop.org/src/gst-plugins-base
 GST1_PLUGINS_BASE_INSTALL_STAGING = YES