zerotier: change license to BSL 1.1

Business Source License.

Signed-off-by: Moritz Warning <moritzwarning@web.de>

net/zerotier/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=zerotier
 PKG_VERSION:=1.4.4
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/zerotier/ZeroTierOne/tar.gz/$(PKG_VERSION)?
@@ -15,7 +15,7 @@ PKG_HASH:=0c11aab77b1c30fb8932e31906fc93fe7cb38c579c33740c1d407ec13d5b3e12
 PKG_BUILD_DIR:=$(BUILD_DIR)/ZeroTierOne-$(PKG_VERSION)
 
 PKG_MAINTAINER:=Moritz Warning <moritzwarning@web.de>
-PKG_LICENSE:=GPL-3.0-or-later
+PKG_LICENSE:=BSL 1.1
 PKG_LICENSE_FILES:=LICENSE.txt
 
 PKG_BUILD_PARALLEL:=1