Bump submodules

ultraembedded · ultraembedded · commit 68478df85c6c · 2020-06-28T13:14:57.000+01:00
diff --git a/usb_bridge b/usb_bridge
@@ -1 +1 @@
-Subproject commit 81ce423fbd8593c36514eb9238a35b1276aeaf37
+Subproject commit c06026f00ac153768a0f329666877e991ef48512
diff --git a/usb_cdc b/usb_cdc
@@ -1 +1 @@
-Subproject commit 6619f40dd50c39176f630d8ca2b15453a748e1d8
+Subproject commit fb8e64843852abd3718aa28e6fb558f15c19a50d
diff --git a/usb_serial b/usb_serial
@@ -1 +1 @@
-Subproject commit 2f9f7acd45c325a4d51bc133c1dcd36bcec1280f
+Subproject commit e35daa6874a0764abf2391b42cdba4a5803c5b6e
