[CI] Increase the timeout for the clang-tidy build

Summary: The timeout has been reached a couple times, let's increase it.

Test Plan:

./contrib/teamcity/build-configurations.py build-clang-tidy

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D7565