Reduce vertical padding for session list view rows (8px->4px)

- Bump 1.22.7, SW cache v38->v39

tests/test_pcap_import.py

@@ -224,7 +224,7 @@ class TestImportEndpoint(unittest.TestCase):
 class TestVersion(unittest.TestCase):
     def test_package_version(self):
         from simtrace2_pysniff import __version__
-        self.assertEqual(__version__, '1.22.6')
+        self.assertEqual(__version__, '1.22.7')
 
     def test_status_includes_version(self):
         import os