Increase brew outdated timeout from 15s to 60s

Homebrew can be slow depending on network conditions or if it needs to
update its index, causing the update check to time out intermittently.
Since this is a non-interactive background check, a longer timeout won't
impact UX.

Fixes #694

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Drew Cain <groksrc@gmail.com>

Author: groksrc

src/basic_memory/cli/auto_update.py

@@ -22,7 +22,7 @@
 PYPI_JSON_URL = "https://pypi.org/pypi/basic-memory/json"
 
 PYPI_TIMEOUT_SECONDS = 5
-BREW_OUTDATED_TIMEOUT_SECONDS = 15
+BREW_OUTDATED_TIMEOUT_SECONDS = 60
 UV_UPGRADE_TIMEOUT_SECONDS = 180
 BREW_UPGRADE_TIMEOUT_SECONDS = 600