Update git submodules

* Update plugins/delete-project from branch 'master'
  to 128d50bf6f877b3d803475aa03e7d8a25abd79f5
  - Merge branch 'stable-3.1'
    
    * stable-3.1:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: If6898ee2569cba6a489fc6fb2d30d2b426c85368
    
  - Merge branch 'stable-3.0' into stable-3.1
    
    * stable-3.0:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: I2da6597a93117955b61ac8bfb8d332b5d28b2b78
    
  - Merge branch 'stable-2.16' into stable-3.0
    
    * stable-2.16:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: I7734e57d616accafe09c5cee7f15332e2d810a92
    
  - Bump Bazel version to 3.0.0
    
    Change-Id: I0d0a1021517abe96b5ec499f7871b200ac3b9ae1
    
  - Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
    
    Change-Id: I42f312be10b4c300503889f3eb5667dd538a2dff
    
  - Upgrade bazlets to latest stable-2.16
    
    Change-Id: If7f9bfc70eefc559cbf21ddefdec763d33b434d0
    

* Update plugins/gitiles from branch 'master'
  to df5d2e55b1126c7bc7c589a9971f758b0dae5ce7
  - Merge branch 'stable-3.1'
    
    * stable-3.1:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: I03f66d82c0264b2354ab42a53d805569dc162d53
    
  - Merge branch 'stable-3.0' into stable-3.1
    
    * stable-3.0:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: I974a39749c0acd122203dca09e87a9b8d3f82b45
    
  - Merge branch 'stable-2.16' into stable-3.0
    
    * stable-2.16:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: Id6eaa7aa62f3d173ce36d7c50cff6249e6ec2117
    
  - Bump Bazel version to 3.0.0
    
    Change-Id: If0593de321c3f44455e199fa30db11a2fb791fd0
    
  - Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
    
    Change-Id: If73e340344a3100b6941cfdfecdcbbaa170bfc20
    
  - Upgrade bazlets to latest stable-2.16
    
    Change-Id: If867d4b25f103a06b1ba29ae1ccbd46fb144adae
    

* Update plugins/webhooks from branch 'master'
  to 11510b804a5491a2a4368a5b0681d11cb1e77240
  - Merge branch 'stable-3.1'
    
    * stable-3.1:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: Ia014786e2946804f4a662c1e5d5d7ddbb9c977ec
    
  - Merge branch 'stable-3.0' into stable-3.1
    
    * stable-3.0:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: I7a9d754bc6d4834315d5fe4d728cfa36e26ac926
    
  - Merge branch 'stable-2.16' into stable-3.0
    
    * stable-2.16:
      Bump Bazel version to 3.0.0
      Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
      Upgrade bazlets to latest stable-2.16
    
    Change-Id: Ice7e6fb0438f2f549803591e46f0c7fe2b94d3c1
    
  - Bump Bazel version to 3.0.0
    
    Change-Id: I89336d6a43539e48134a2f6d44b67dc474ce0ef7
    
  - Upgrade bazlets to latest stable-2.16 to build with 2.16.17 API
    
    Change-Id: Id92c76e68e843799438a119a0022278bcc4163ee
    
  - Upgrade bazlets to latest stable-2.16
    
    Change-Id: Idbd8e598dcb500e9c5e0ccd12aea3be12444a8a4
    
diff --git a/plugins/delete-project b/plugins/delete-project
index e267920..128d50b 160000
--- a/plugins/delete-project
+++ b/plugins/delete-project
@@ -1 +1 @@
-Subproject commit e267920b6f1660b348e2d27b5bb6dd1dee74a36c
+Subproject commit 128d50bf6f877b3d803475aa03e7d8a25abd79f5
diff --git a/plugins/gitiles b/plugins/gitiles
index 860c74e..df5d2e5 160000
--- a/plugins/gitiles
+++ b/plugins/gitiles
@@ -1 +1 @@
-Subproject commit 860c74e31d41c9ff6b3b39c99b40647fd7fce9d7
+Subproject commit df5d2e55b1126c7bc7c589a9971f758b0dae5ce7
diff --git a/plugins/webhooks b/plugins/webhooks
index c3d83d1..11510b8 160000
--- a/plugins/webhooks
+++ b/plugins/webhooks
@@ -1 +1 @@
-Subproject commit c3d83d14c8a542d241e1e55eb5e1aa44cc0aaa66
+Subproject commit 11510b804a5491a2a4368a5b0681d11cb1e77240