[gazebo] version bump for gazebo 7 and 8

7.13.0-1 -> 7.13.1-1
8.5.0-1 -> 8.6.0-1

library/gazebo

@@ -60,12 +60,12 @@ Directory: gazebo/6/ubuntu/trusty/libgazebo6
 
 Tags: gzserver7, gzserver7-xenial
 Architectures: amd64
-GitCommit: 7d509226281b3aeaddca3f917e1622b17100a837
+GitCommit: 39a6359049303ab233f4050d6d5f0db6fc3d5944
 Directory: gazebo/7/ubuntu/xenial/gzserver7
 
 Tags: libgazebo7, libgazebo7-xenial
 Architectures: amd64
-GitCommit: 7d509226281b3aeaddca3f917e1622b17100a837
+GitCommit: 39a6359049303ab233f4050d6d5f0db6fc3d5944
 Directory: gazebo/7/ubuntu/xenial/libgazebo7
 
 
@@ -77,12 +77,12 @@ Directory: gazebo/7/ubuntu/xenial/libgazebo7
 
 Tags: gzserver8, gzserver8-xenial
 Architectures: amd64
-GitCommit: 9bc89cc4888a0c1ad967554a3754f8c84f925d3d
+GitCommit: 84563884e54305fe02c38b5073c60fe3730fc8fa
 Directory: gazebo/8/ubuntu/xenial/gzserver8
 
 Tags: libgazebo8, libgazebo8-xenial
 Architectures: amd64
-GitCommit: 9bc89cc4888a0c1ad967554a3754f8c84f925d3d
+GitCommit: 84563884e54305fe02c38b5073c60fe3730fc8fa
 Directory: gazebo/8/ubuntu/xenial/libgazebo8