cgi-io: update to latest Git HEAD

98cef9d Retry splice() syscall on EINTR

Fixes: https://github.com/openwrt/luci/issues/5342
Fixes: https://bugs.openwrt.org/index.php?do=details&task_id=4006
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

net/cgi-io/Makefile

@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=cgi-io
-PKG_RELEASE:=19
+PKG_RELEASE:=20
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/cgi-io.git
-PKG_SOURCE_DATE:=2020-10-27
-PKG_SOURCE_VERSION:=ab4c3471b26179b6e1decfb6ca27c4a87df9a0a4
-PKG_MIRROR_HASH:=fb1ca916aeb75a58f3ca003556aa7516d30e5d868000fc00929ca4c4bf336b0e
+PKG_SOURCE_DATE:=2021-09-08
+PKG_SOURCE_VERSION:=98cef9dda63623eff07bd574ad7c98ef282af18d
+PKG_MIRROR_HASH:=dfbec859e261ef6851f76474739c19baaadc1e5cd3ae2d2b9d56a7782ac79963
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0-or-later