Pull request 1732: imp-specs

Merge in DNS/adguard-home from imp-specs to master

Squashed commit of the following:

commit 56eeda8fa3315b31304400da9c97d8cbbe042343
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Feb 8 15:07:13 2023 +0300

    all: imp specs

bamboo-specs/release.yaml

@@ -223,6 +223,7 @@
 
         channel="${bamboo.channel}"
         readonly channel
+
         case "$channel"
         in
         ('release')
@@ -269,8 +270,10 @@
 
         set -e -f -u -x
 
-        export CHANNEL="${bamboo.channel}"
-        if [ "$CHANNEL" != 'release' ] && [ "${CHANNEL}" != 'beta' ]
+        channel="${bamboo.channel}"
+        readonly channel
+
+        if [ "$channel" != 'release' ] && [ "${channel}" != 'beta' ]
         then
               echo "don't publish to GitHub Releases for this channel"