dawn: update to latest version

Includes:
- dawn_iwinfo: fix whitespace
- dawn_iwinfo: indentation
- dawn_iwinfo: iwinfo_finish();
- dawn_iwinfo: filter out global interface
- dawn_iwinfo: release iwinfo after usage
- tcpsocket: fix port print
- github: set CONFIG_SRC_TREE_OVERRIDE in actions CI
- github: fix link to dawn source
- github: use v2 for checkout action
- github: add GitHub Actions CI
- ubus: only update TCP socket list when using TCP connections
- add notice that full wpad is requirement
- fix link to luci-app-dawn
- update readme and install instructions

Signed-off-by: Nick Hainke <vincent@systemli.org>

net/dawn/Makefile

@@ -5,13 +5,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dawn
-PKG_SOURCE_DATE:=2020-04-17
-PKG_RELEASE:=2
+PKG_SOURCE_DATE:=2020-05-20
+PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/berlin-open-wireless-lab/DAWN.git
-PKG_SOURCE_VERSION:=2ff3b3017fc5e5477f494e6aa85d6b0b4acd68bb
-PKG_MIRROR_HASH:=b9260dad56f40a371157a6d9c54ac295bdbfc5f853915df18e4152eb8f3110f9
+PKG_SOURCE_VERSION:=73c79989676f5b89f4547f4effc4497f5aaeea44
+PKG_MIRROR_HASH:=a5bf4bf58e3352316800a1f5d4cfb750a09f4f43c1494c5560d71a22fa267c55
 
 PKG_MAINTAINER:=Nick Hainke <vincent@systemli.org>
 PKG_LICENSE:=GPL-2.0-only