CI: Bump timeout to 180 minutes
Noticing a few timeouts on builds lately.

Investigating whether we need to bump the timeout limit or some tests are stalling.

The test suite has definitely gotten slower in the last month or two.  Used to be ~15 minutes locally, now closer to twice that. FYI just ran `pytest pandas/tests/extension/test_arrow.py --skip-slow --skip-db` after upgrading to newest pyarrow and a) took 10:15 and b) 4441 xfails Failures are related to https://github.com/pandas-dev/pandas/issues/48432. Merging as this will help alleviate the timeouts in the meantime @mroeschke I think we should backport, do you agree? Sure, this should be a low risk change to backport. @meeseeksdev backport 1.5.x Yep agreed. Want to avoid dealing with the timeouts for the next 5-6 months