Pull request 2150: AG-28455 rc versions

Squashed commit of the following:

commit 9b80bf2da8676c7a80982b88b547b35760afd4dd
Merge: 2c184158c fede29794
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Fri Feb 16 15:49:23 2024 +0300

    Merge branch 'master' into AG-28455-rc-versions

commit 2c184158c052dc1ddc57f4bdf53ad31a50410659
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Feb 14 13:01:30 2024 +0300

    scripts: imp code

commit f0965058ad2231b342cf406a8434d76cc3f546c2
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Feb 13 14:52:10 2024 +0300

    scripts: imp code

commit a5bed23c7077ea3655ae88528c1dfc5ea9d061a7
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Feb 12 18:35:52 2024 +0300

    scripts: fix typo

commit 36e9ea1ac3403a53452fcc16d35d32ec7663fd1e
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Feb 12 15:41:57 2024 +0300

    scripts: revert changes, imp docs

commit d74c85d4ec77b12ceaae28db5a8e7961896d688a
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Feb 5 18:12:38 2024 +0300

    all: mark rc versions separately

bamboo-specs/test.yaml

@@ -6,6 +6,7 @@
     'name': 'AdGuard Home - Build and run tests'
 'variables':
     'dockerGo': 'adguard/golang-ubuntu:8.0'
+    'channel': 'development'
 
 'stages':
   - 'Tests':
@@ -73,7 +74,7 @@
                 make\
                         ARCH="amd64"\
                         OS="windows darwin linux"\
-                        CHANNEL="development"\
+                        CHANNEL=${bamboo.channel}\
                         SIGN=0\
                         PARALLELISM=1\
                         VERBOSE=2\
@@ -115,3 +116,16 @@
 'labels': []
 'other':
     'concurrent-build-plugin': 'system-default'
+
+'branch-overrides':
+    # rc-vX.Y.Z branches are the release candidate branches. They are created
+    # from the release branch and are used to build the release candidate
+    # images.
+  - '^rc-v[0-9]+\.[0-9]+\.[0-9]+':
+        # Build betas on release branches manually.
+        'triggers': []
+        # Set the default release channel on the release branch to beta, as we
+        # may need to build a few of these.
+        'variables':
+            'dockerGo': 'adguard/golang-ubuntu:8.0'
+            'channel': 'candidate'