Apply updates from cookiecutter

This automated commit applies the latest updates from our cookiecutters [1] to
this repo.

[1]: https://github.com/hypothesis/cookiecutters

Author: github-actions[bot]

.cookiecutter/includes/tox/deps

@@ -0,0 +1 @@
+tests,functests: pytest<8.4

tox.ini

@@ -14,7 +14,7 @@ skip_install =
 setenv =
     PYTHONUNBUFFERED = 1
     OBJC_DISABLE_INITIALIZE_FORK_SAFETY = YES
-    dev: DEV = {env:DEV:true}
+    {dev,functests}: DEV = {env:DEV:true}
     dev: SENTRY_ENVIRONMENT = {env:SENTRY_ENVIRONMENT:dev}
     dev: NEW_RELIC_APP_NAME = {env:NEW_RELIC_APP_NAME:dependabot-alerts}
     dev: NEW_RELIC_ENVIRONMENT = {env:NEW_RELIC_ENVIRONMENT:dev}
@@ -34,7 +34,6 @@ deps =
     lint: pylint>=3.0.0
     lint: pydocstyle
     lint: pycodestyle
-    tests,functests: pytest<8.4
     lint,tests: pytest-mock
     lint,tests,functests: pytest
     lint,tests,functests: h-testkit
@@ -45,6 +44,7 @@ deps =
     lint,tests,functests: h-matchers
     lint,template: cookiecutter
     typecheck: mypy
+    tests,functests: pytest<8.4
 depends =
     coverage: tests,py{311,310,39}-tests
 commands =