package/upmpdcli: bump to version 1.5.11

From https://www.lesbonscomptes.com/upmpdcli/pages/releases.html:

2021-03-13 upmpdcli 1.5.11
 * Fix rare possible issue with Kazoo volume control

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/upmpdcli/upmpdcli.hash

@@ -1,5 +1,5 @@
-# From http://www.lesbonscomptes.com/upmpdcli/downloads/upmpdcli-1.5.10.tar.gz.sha256:
-sha256  8d864bf2eb2192a2f6a891f36016df413753247e3879e3553cc1693233604684  upmpdcli-1.5.10.tar.gz
+# From http://www.lesbonscomptes.com/upmpdcli/downloads/upmpdcli-1.5.11.tar.gz.sha256:
+sha256  7c8c6ab866114699405223c60457448dcce35fc13e1e374f68b60eefc55f4f04  upmpdcli-1.5.11.tar.gz
 
 # Hash for license file:
 sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING

package/upmpdcli/upmpdcli.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-UPMPDCLI_VERSION = 1.5.10
+UPMPDCLI_VERSION = 1.5.11
 UPMPDCLI_SITE = http://www.lesbonscomptes.com/upmpdcli/downloads
 UPMPDCLI_LICENSE = LGPL-2.1+
 UPMPDCLI_LICENSE_FILES = COPYING