Update DEVSTACK_SERIES to 2025.1

stable/2024.2 branch has been created now and
current master is for 2025.1.

Change-Id: If5c9de9ddfab1bff313c70cf2c40ce7fbe60473f
diff --git a/stackrc b/stackrc
index 0b3e1c6..ab1f8a6 100644
--- a/stackrc
+++ b/stackrc
@@ -249,7 +249,7 @@
 # Setting the variable to 'ALL' will activate the download for all
 # libraries.
 
-DEVSTACK_SERIES="2024.2"
+DEVSTACK_SERIES="2025.1"
 
 ##############
 #