TST: adapt to "dependencies" possibly being a dynamic field

Author: dnicolodi

tests/packages/unsupported-dynamic/pyproject.toml

@@ -10,5 +10,5 @@ requires = ['meson-python']
 name = 'unsupported-dynamic'
 version = '1.0.0'
 dynamic = [
-    'dependencies',
+    'requires-python',
 ]

tests/test_project.py

@@ -44,7 +44,7 @@ def test_version(package):
 
 
 def test_unsupported_dynamic(package_unsupported_dynamic):
-    with pytest.raises(mesonpy.ConfigError, match='unsupported dynamic metadata fields: "dependencies"'):
+    with pytest.raises(mesonpy.ConfigError, match='unsupported dynamic metadata fields: "requires-python"'):
         with mesonpy.Project.with_temp_working_dir():
             pass