Add LMIv20 to Release pipeline (#5631)

Co-authored-by: Suma Kasa <sumakasa@amazon.com>

Author: ksuma2109

release_images_inference.yml

@@ -223,3 +223,16 @@ release_images:
       example: False
       disable_sm_tag: True
       force_release: False
+  18:
+    framework: "djl"
+    version: "0.36.0"
+    arch_type: "x86"
+    inference:
+      device_types: [ "gpu" ]
+      python_versions: [ "py312" ]
+      os_version: "ubuntu24.04"
+      lmi_version: "20.0.0"
+      cuda_version: "cu128"
+      example: False
+      disable_sm_tag: True
+      force_release: False