spdlog: update to 1.8.1

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/spdlog/Makefile

@@ -6,12 +6,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=spdlog
-PKG_VERSION:=1.8.0
+PKG_VERSION:=1.8.1
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/gabime/spdlog/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=1e68e9b40cf63bb022a4b18cdc1c9d88eb5d97e4fd64fa981950a9cacf57a4bf
+PKG_HASH:=5197b3147cfcfaa67dd564db7b878e4a4b3d9f3443801722b3915cdeced656cb
 
 PKG_MAINTAINER:=
 PKG_LICENSE:=MIT