Update git submodules

* Update docs/submodules/aai/esr-server.git from branch 'master'
  to 53506cec0c9e2366e1a7bc81a554eac278b0b254
  - Upversion to MSB-JAVA-SDK 1.2.5
    
    Issue-ID: AAI-2876
    Change-Id: Ic725a3b75a40c3e0f26455fe3a52fc2eb2a0dfea
    Signed-off-by: HePeng <he.peng6@zte.com.cn>
    
diff --git a/docs/submodules/aai/esr-server.git b/docs/submodules/aai/esr-server.git
index 69de12b..53506ce 160000
--- a/docs/submodules/aai/esr-server.git
+++ b/docs/submodules/aai/esr-server.git
@@ -1 +1 @@
-Subproject commit 69de12b9599f7ac54ad958a8f982cd22349d9ce3
+Subproject commit 53506cec0c9e2366e1a7bc81a554eac278b0b254