refactor: simplify sys exit test

Author: gadomski

tests/test_sys_exit.py

@@ -1,23 +1,18 @@
 import subprocess
 
+import pytest
+
 
 def test_correct_sys_exit_error_python():
-    try:
+    with pytest.raises(subprocess.CalledProcessError):
         subprocess.run(
             ["stac-validator", "tests/test_data/bad_data/bad_item_v090.json"],
             check=True,
         )
-        assert False
-    except subprocess.CalledProcessError:
-        assert True
 
 
 def test_false_sys_exit_error_python():
-    try:
-        subprocess.run(
-            ["stac-validator", "tests/test_data/v090/items/good_item_v090.json"],
-            check=True,
-        )
-        assert True
-    except subprocess.CalledProcessError:
-        assert False
+    subprocess.run(
+        ["stac-validator", "tests/test_data/v090/items/good_item_v090.json"],
+        check=True,
+    )