Increase test timeouts for ARM64 Windows CI

The windows-11-arm runner has 4 vCPUs (vs 16 for windows-2025-16core),
so tests need longer timeouts. Four tests were timing out at the
default limits (3s/15s/60s/240s for small/medium/large/enormous).
Increase to 15s/60s/240s/240s to match the slower hardware.

Made-with: Cursor

Author: threepointone

build/ci.bazelrc

@@ -97,6 +97,8 @@ test:ci-linux --test_size_filters=
 test:ci-macOS --test_size_filters=
 test:ci-windows --test_size_filters=
 test:ci-windows-arm64 --test_size_filters=
+# The windows-11-arm runner has only 4 vCPUs (vs 16 for x64 Windows), so tests need more time.
+test:ci-windows-arm64 --test_timeout=15,60,240,240
 
 # Run container tests on Linux CI
 test:ci-linux --test_tag_filters=-off-by-default,-requires-fuzzilli