Update stable21 target versions

Signed-off-by: Joas Schilling <coding@schilljs.com>

.drone.yml

@@ -1353,7 +1353,7 @@ steps:
   commands:
     # JavaScript files are not used in integration tests so it is not needed to
     # build them.
-    - git clone --depth 1 https://github.com/nextcloud/spreed apps/spreed
+    - git clone --depth 1 --branch stable21 https://github.com/nextcloud/spreed apps/spreed
 - name: integration-sharing-v1-video-verification
   image: nextcloudci/integration-php7.3:integration-php7.3-2
   commands:

tests/acceptance/run-local.sh

@@ -64,7 +64,7 @@ if [ "$1" = "--acceptance-tests-dir" ]; then
 fi
 
 ACCEPTANCE_TESTS_CONFIG_DIR="../../$ACCEPTANCE_TESTS_DIR/config"
-DEV_BRANCH="master"
+DEV_BRANCH="stable21"
 
 # "--timeout-multiplier N" option can be provided to set the timeout multiplier
 # to be used in ActorContext.