Merge branch 'release/0.23.3'

Author: szymonlopaciuk

pyproject.toml

@@ -3,4 +3,9 @@ build-backend = 'setuptools.build_meta'
 requires = [
     'setuptools >= 43.0.0',
     'numpy',
-    ]
+]
+
+[pytest]
+markers = [
+    "context_dependent: marks test as one that depends on the execution context",
+]

tests/test_build_particles_normalized.py

@@ -183,7 +183,7 @@ def test_build_particles_normalized_match_at_s(test_context):
 
     particles.move(_context=xo.context_default)
     assert not np.allclose(particles.x, 0.02, atol=1e-20)
-    line.unfreeze()
+    line.discard_tracker()
     line.insert_element(element=xt.Marker(), name='match_at_s', at_s=match_at_s)
     line.build_tracker(_context=test_context)
     particles.move(_context=test_context)