semaphoreci: update Debian release to bullseye

The Debian upstream-ci branch is updating to require debhelper 13,
which is only currently available from bullseye, or buster-backports.

diff --git a/semaphoreci/semaphore-runner.sh b/semaphoreci/semaphore-runner.sh
index 897b398df958a9da77224d9f760f26b6eb12581d..abffb205889656d60034354f8f406a712a7d03cc 100755 (executable)
--- a/semaphoreci/semaphore-runner.sh
+++ b/semaphoreci/semaphore-runner.sh
@@ -4,7 +4,7 @@ set -eux
 
 # default to Debian testing
 DISTRO=${DISTRO:-debian}
-RELEASE=${RELEASE:-buster}
+RELEASE=${RELEASE:-bullseye}
 BRANCH=${BRANCH:-upstream-ci}
 ARCH=${ARCH:-amd64}
 CONTAINER=${RELEASE}-${ARCH}