⬆️ Update pytest requirement from <7,>=6 to >=7,<8 (#674)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Chris Sewell <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -65,15 +65,15 @@ rtd = [
 testing = [
     "beautifulsoup4",
     "coverage[toml]",
-    "pytest>=6,<7",
+    "pytest>=7,<8",
     "pytest-cov",
     "pytest-regressions",
     "pytest-param-files~=0.3.4",
     "sphinx-pytest",
 ]
 testing-docutils = [
     "pygments",
-    "pytest>=6,<7",
+    "pytest>=7,<8",
     "pytest-param-files~=0.3.4",
 ]