Widen APDU list vertical scrollbar to 12px

- .apdu-list::-webkit-scrollbar override (global default is 6px)
- Bump 1.22.16, SW cache v47->v48

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__, '1.22.15')
+        self.assertEqual(__version__, '1.22.16')
 
     def test_status_includes_version(self):
         import os