Leak canary improvements

• the debug builds, which contain leak canary indicate an leak for the tile service. Probably similar to https://gitlab.torproject.org/tpo/applications/vpn/-/merge_requests/88#note_2991095, we only need to tweak leak canary itself.
• there's a new leak canary version, we should update it, it fixes crashes in the lib
• it's possible to run leak canary in a separate process. We should try that to avoid out of memory exception in the app while the lib analyzes the heap dump: https://square.github.io/leakcanary/recipes/#running-the-leakcanary-analysis-in-a-separate-process