increase trains limit to support big cities like Paris/London/.. #389

Job	Run time
formatting	45s
linux (linux-amd64-release, linux-amd64)	1m 14s
macos (macos-x86_64, On)	6m 58s
linux (clang-tidy)	3m 4s
msvc (Debug)	5m 27s
macos (macos-arm64)	6m 7s
openapi-validate	52s
linux (linux-sanitizer)	2m 27s
msvc (Release)	4m 26s
linux (linux-debug, valgrind --suppressions=deps/osr/docs/tbb.supp --suppressions=deps/osr/docs/p...	9m 5s
ui	34s
docker	42s
	41m 41s

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