package/libsigc2: bump to version 2.12.1

https://github.com/libsigcplusplus/libsigcplusplus/blob/2.12.1/NEWS

Signed-off-by: Daniel Lang <dalang@gmx.at>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/libsigc2/libsigc2.hash

@@ -1,5 +1,5 @@
-# From https://download.gnome.org/sources/libsigc++/2.12/libsigc++-2.12.0.sha256sum
-sha256  1c466d2e64b34f9b118976eb21b138c37ed124d0f61497df2a90ce6c3d9fa3b5  libsigc++-2.12.0.tar.xz
+# From https://download.gnome.org/sources/libsigc++/2.12/libsigc++-2.12.1.sha256sum
+sha256  a9dbee323351d109b7aee074a9cb89ca3e7bcf8ad8edef1851f4cf359bd50843  libsigc++-2.12.1.tar.xz
 
 # Locally calculated
 sha256  5bbcbb737e60fe9deba08ecbd00920cfcc3403ba2e534c64fdeea49d6bb87509  COPYING

package/libsigc2/libsigc2.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 LIBSIGC2_VERSION_MAJOR = 2.12
-LIBSIGC2_VERSION = $(LIBSIGC2_VERSION_MAJOR).0
+LIBSIGC2_VERSION = $(LIBSIGC2_VERSION_MAJOR).1
 LIBSIGC2_SOURCE = libsigc++-$(LIBSIGC2_VERSION).tar.xz
 LIBSIGC2_SITE = https://download.gnome.org/sources/libsigc++/$(LIBSIGC2_VERSION_MAJOR)
 LIBSIGC2_INSTALL_STAGING = YES