openwrt-keyring: add OpenWrt 21.02 GPG/usign keys

49283916005d usign: add 21.02 release build pubkey
bc4d80f064f2 gpg: add OpenWrt 21.02 signing key

Signed-off-by: Petr Štetiar <[email protected]>

package/system/openwrt-keyring/Makefile

@@ -7,9 +7,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/keyring.git
-PKG_SOURCE_DATE:=2019-07-25
-PKG_SOURCE_VERSION:=8080ef341b4180e40c4ae8ab63511ac6496f0ad1
-PKG_MIRROR_HASH:=000882364b953691bf02f7ac41462badb68f452f0317cdfd51cfd617c9b1e364
+PKG_SOURCE_DATE:=2021-02-20
+PKG_SOURCE_VERSION:=49283916005d7868923d34ab34f14188cf74812d
+PKG_MIRROR_HASH:=7b58592bb49e4b37c8e80904c8f457ce3f0f2e6b1d2c473ccfe9204a8b7be831
 
 PKG_MAINTAINER:=John Crispin <[email protected]>
 PKG_LICENSE:=GPL-2.0