[pygobject] poetry: update deps

[Christoph Reiter <creiter src gnome org>]

commit 94ec4ba56206470417109d1cead6ac999f8bd977
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Sun Mar 27 16:03:05 2022 +0200

    poetry: update deps

 pyproject.toml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pyproject.toml b/pyproject.toml
index 8dae0503..8704714a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,11 +9,11 @@ python = "^3.7"
 pycairo = "^1.16"
 
 [tool.poetry.dev-dependencies]
-pytest = "^6.0.0"
+pytest = "^7.0.0"
 flake8 = "^3.9.1"
 Sphinx = "^3.5.4|^4.2.0"
 sphinx-rtd-theme = "^0.5.2|^1.0.0"
-coverage = "^5.5"
+coverage = "^6.3.2"
 
 [build-system]
 requires = ["setuptools", "wheel", "pycairo"]