Merge tag 'v2.3.15' into testing

diff --cc sdk/branches/testing.bnd
index 6f457dd8725f74a4140691b98ef67bfd9ca7b2e2,0000000000000000000000000000000000000000..906a9e899f5f9ed2081cabf3616e1ff138fbe450
mode 100644,000000..100644
--- 1/sdk/branches/testing.bnd
--- /dev/null
+++ b/sdk/branches/testing.bnd
@@@ -1,4 -1,0 +1,12 @@@
 +major=2
 +minor=1
 +micro=27
 +qualifier=.next
++
++Bundle-Copyright= \
++Copyright 2014-2023 Argeo GmbH, \
++Copyright 2017-2023 Mathieu Baudier
++
++SPDX-License-Identifier= \
++GPL-2.0-or-later \
++OR LicenseRef-argeo2-GPL-2.0-or-later-with-EPL-and-JCR-permissions