package/libcodec2: bump version to 1.2.0

The tag we currently use no longer exists in the upstream repository, as
the history has ben "rewritten":
    https://github.com/drowe67/codec2/issues/5

Bump to the latest (and only) tag in the new repository.

Release notes: https://github.com/drowe67/codec2/releases/tag/1.2.0

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
[yann.morin.1998@free.fr: explain about missing tag]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/libcodec2/libcodec2.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  44015b071968d98ee326012c498db6a8308bed1a7a914ecb6d4d8e2a354a4611  libcodec2-1.1.1.tar.gz
+sha256  cbccae52b2c2ecc5d2757e407da567eb681241ff8dadce39d779a7219dbcf449  libcodec2-1.2.0.tar.gz
 sha256  9ebb6f82b7380a62ac74c5f0322c88e6744dedf2ebe1f54d6f088282b39844bf  COPYING

package/libcodec2/libcodec2.mk

@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-LIBCODEC2_VERSION = 1.1.1
-LIBCODEC2_SITE = $(call github,drowe67,codec2,v$(LIBCODEC2_VERSION))
+LIBCODEC2_VERSION = 1.2.0
+LIBCODEC2_SITE = $(call github,drowe67,codec2,$(LIBCODEC2_VERSION))
 LIBCODEC2_LICENSE = LGPL-2.1
 LIBCODEC2_LICENSE_FILES = COPYING
 LIBCODEC2_INSTALL_STAGING = YES