fix(bazel): migrate tests <5 min to size medium

- https://bazel.build/reference/be/common-definitions#common-attributes-tests

Signed-off-by: Cameron Smith <cameron.ray.smith@gmail.com>

src/pyrovelocity/BUILD.bazel

@@ -49,7 +49,12 @@ py_test_module_list(
         "tests/models/test_deterministic_simulation.py",
         "tests/models/test_transcription_dynamics.py",
         "tests/models/test_velocity_model.py",
+        "tests/plots/test_vector_fields.py",
         "tests/tasks/test_data.py",
+        "tests/tasks/test_postprocess.py",
+        "tests/tasks/test_preprocess.py",
+        "tests/tasks/test_summarize.py",
+        "tests/tasks/test_train.py",
         "tests/test_utils.py",
     ],
     imports = [".."],
@@ -60,11 +65,6 @@ py_test_module_list(
 py_test_module_list(
     size = "large",
     files = [
-        "tests/plots/test_vector_fields.py",
-        "tests/tasks/test_postprocess.py",
-        "tests/tasks/test_preprocess.py",
-        "tests/tasks/test_summarize.py",
-        "tests/tasks/test_train.py",
     ],
     imports = [".."],
     tags = [""],