chore: tag 1.68.0

[jrconlin]

Features

• emit a tag in autoconnect's metrics (feat: emit a tag in autoconnect's metrics #435) (67186854)
• Add send notification task to locust load test file (453ba8d4)
• add an autoconnect-web Error type (feat: add an autoconnect-web Error type #432) (58086e77)
• switch the load tester to pypy-3.10 (feat: switch the load tester to pypy-3.10 #426) (5b4d6d71)
• Update loadtests user and tests (d4af1bfe)
• Add GCP BigTable support (feat: Add GCP BigTable support  #364) (608c52fe)
• consolidate the sentry middlwares into autopush_common (e65486b9)
• add stacktraces to some sentry events (feat: add stacktraces to some sentry events #406) (0ded4de1)
• Topic messages shouldn't have sortkey_timestamps (feat: Topic messages shouldn't have sortkey_timestamps #402) (eeff8d71)
• build/deploy an autoconnect docker (feat: build/deploy an autoconnect docker #396) (9ed4e6f0)
• make DbClient's message table month optional (feat: make DbClient's message table month optional #393) (ab3614b7)
• remove legacy table rotation (feat: remove legacy table rotation #389) (6aa107f5)

Doc

• fill in some autoconnect TODO docs (docs: fill in some autoconnect TODO docs #410) (74ffdb05)
• Update docs for modern version of autopush (docs: Update docs for modern version of autopush #388) (d36fb527)

Bug Fixes

• Add better error messaging for GCM/FCM processing (bug: Add better error messaging for GCM/FCM processing #445) (2e48f504)
• missing class-picker option in Kubernetes config (9d0faf7c)
• apply fixes from code review 2 (7ea158d2)
• apply fixes from code review (142c4d2c)
• load test docker build error in GCP (e7e7539e)
• remove print statement (2134d050)
• load test script modifies kubernetes config on first run only (89dc80bc)
• use explicit path (a51fca5c)
• remove mozsvc-common (fix: remove mozsvc-common #394) (814ff49e)
• remove mozsvc-common (fix: remove mozsvc-common #394) (66bb74f9)

Test

• validate message schema in load tests with models (0d8c1c2f)
• add a load test shape (f84e2665)
• calibrate load tests (7a6c099f)

Chore

• update user, spawn rate and time in load tests (b9a88e5a)
• add python linters and formatters to CI (615b93ad)
• deps:
  • bump gevent from 23.9.0.post1 to 23.9.1 in /tests/load (34eb330e)
  • bump cryptography from 40.0.2 to 41.0.4 in /tests (acd35f27)