netdata: update to version 1.20.0

- Add libuv dependency which is now required. Otherwise during
compiling, I have received this error:

configure: error: libuv required but not found. Try installing 'libuv1-dev' or 'libuv-devel'.

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

admin/netdata/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=netdata
-PKG_VERSION:=1.19.0
+PKG_VERSION:=1.20.0
 PKG_RELEASE:=1
 
 PKG_MAINTAINER:=Josef Schlehofer <pepe.schlehofer@gmail.com>, Daniel Engberg <daniel.engberg.lists@pyret.net>
@@ -18,7 +18,7 @@ PKG_CPE_ID:=cpe:/a:my-netdata:netdata
 
 PKG_SOURCE:=$(PKG_NAME)-v$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/netdata/netdata/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=007656f639d3544698af503f35550aeb4d4d5a06b81801bf5acf4ac21db68f6e
+PKG_HASH:=c739e0fa8d6d7f433c0c7c8016b763e8f70519d67f0b5e7eca9ee5318f210d90
 
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=1
@@ -30,7 +30,7 @@ include $(INCLUDE_DIR)/package.mk
 define Package/netdata
   SECTION:=admin
   CATEGORY:=Administration
-  DEPENDS:=+zlib +libuuid +libmnl +libjson-c
+  DEPENDS:=+zlib +libuuid +libuv +libmnl +libjson-c
   TITLE:=Real-time performance monitoring tool
   URL:=https://www.netdata.cloud/
 endef