termux-keyring: add key used by automatic builds

packages/termux-keyring/build.sh

@@ -1,11 +1,16 @@
 TERMUX_PKG_HOMEPAGE=https://github.com/termux
 TERMUX_PKG_DESCRIPTION="GPG public keys for the official Termux repositories"
 TERMUX_PKG_LICENSE="Apache-2.0"
-TERMUX_PKG_VERSION=1.0
+TERMUX_PKG_VERSION=1.1
 TERMUX_PKG_PLATFORM_INDEPENDENT=yes
 
 termux_step_make_install() {
 	mkdir -p $TERMUX_PREFIX/etc/apt/trusted.gpg.d
+
+	# Maintainer-specific keys.
 	install -Dm600 $TERMUX_PKG_BUILDER_DIR/grimler.gpg $TERMUX_PREFIX/etc/apt/trusted.gpg.d/
 	install -Dm600 $TERMUX_PKG_BUILDER_DIR/xeffyr.gpg $TERMUX_PREFIX/etc/apt/trusted.gpg.d/
+
+	# Key for automatic builds (via CI).
+	install -Dm600 $TERMUX_PKG_BUILDER_DIR/termux-autobuilds.gpg $TERMUX_PREFIX/etc/apt/trusted.gpg.d/
 }