Merge pull request #944 from tew42/main

adding OpenWRT 25.12, retiring 22.x

Author: stgraber

images/openwrt.yaml

@@ -286,6 +286,6 @@ actions:
     rm -f /etc/rc.d/*sysntpd
   releases:
   - snapshot
-  - 22.03
   - 23.05
   - 24.10
+  - 25.12

jenkins/jobs/image-openwrt.yaml

@@ -18,9 +18,9 @@
         type: user-defined
         values:
         - snapshot
-        - "22.03"
         - "23.05"
         - "24.10"
+        - "25.12"
 
     - axis:
         name: variant