Update ycmd

Include the following changes:
- fix issues reported by the flake8-comprehension plugin
- fix regex used to complete include statement
- upgrade regex submodule
- cache flags by file and client data
- upgrade jdt.ls to snapshot 0.18.0
- prevent users from modifying extra conf data
- clang-tidy: performance checks
- api: only split lines on line feed characters (\n)
- remove unused enumerate()
- add tests simulating completer's shutdown timing out
- clang tidy support
- add CUDA support

third_party/ycmd

@@ -1 +1 @@
-Subproject commit fffda54e8ff0dcbb47746702183a689a511fef99
+Subproject commit 8082b6f241bd911452cfd7f21f8a70fce00abf63