chore(deps): update dependency pytest-testmon to v2

Author: renovate[bot]

pyproject.toml

@@ -96,7 +96,7 @@ pytest-cov = "^4.0"
 pytest-datadir = "^1.3"
 pytest-mock = "^3.5"
 pytest-runner = "^6.0"
-pytest-testmon = "^1.3"
+pytest-testmon = "^2.0.0"
 pytest-watch = "^4.2"
 pytest-xdist = "^3.0"
 pytest-forked = "^1.3"