[Gazebo] version bump for Gazebo v9

9.5.0 -> 9.6.0

library/gazebo

@@ -43,12 +43,12 @@ Directory: gazebo/8/ubuntu/xenial/libgazebo8
 
 Tags: gzserver9-xenial
 Architectures: amd64
-GitCommit: 6e6d8b6a56b30bd799fdf916479f535d3de963c1
+GitCommit: cd5b4f73717df2559f021947d8bf195ee86dc3c9
 Directory: gazebo/9/ubuntu/xenial/gzserver9
 
 Tags: libgazebo9-xenial
 Architectures: amd64
-GitCommit: 6e6d8b6a56b30bd799fdf916479f535d3de963c1
+GitCommit: cd5b4f73717df2559f021947d8bf195ee86dc3c9
 Directory: gazebo/9/ubuntu/xenial/libgazebo9
 
 ########################################
@@ -56,12 +56,12 @@ Directory: gazebo/9/ubuntu/xenial/libgazebo9
 
 Tags: gzserver9, gzserver9-bionic
 Architectures: amd64, arm32v7, arm64v8
-GitCommit: 6e6d8b6a56b30bd799fdf916479f535d3de963c1
+GitCommit: 86b1aa7c454f66639dbeead651b416a57c71e72b
 Directory: gazebo/9/ubuntu/bionic/gzserver9
 
 Tags: libgazebo9, libgazebo9-bionic, latest
 Architectures: amd64, arm32v7, arm64v8
-GitCommit: 6e6d8b6a56b30bd799fdf916479f535d3de963c1
+GitCommit: 86b1aa7c454f66639dbeead651b416a57c71e72b
 Directory: gazebo/9/ubuntu/bionic/libgazebo9
 
 ########################################
@@ -69,10 +69,10 @@ Directory: gazebo/9/ubuntu/bionic/libgazebo9
 
 Tags: gzserver9-stretch
 Architectures: amd64, arm32v7, arm64v8
-GitCommit: 9fbac2c659d6feb6fbb24f7b2662441cf1a6cf4b
+GitCommit: dbc80c8d10ef0e8259df1b9b23a5bfff26bdd5cc
 Directory: gazebo/9/debian/stretch/gzserver9
 
 Tags: libgazebo9-stretch
 Architectures: amd64, arm32v7, arm64v8
-GitCommit: 9fbac2c659d6feb6fbb24f7b2662441cf1a6cf4b
+GitCommit: dbc80c8d10ef0e8259df1b9b23a5bfff26bdd5cc
 Directory: gazebo/9/debian/stretch/libgazebo9