Pyupgrade 3.6: Update syntax with Python 3.6+ features (#23305)

Updated Python code with Python 3.6+ features:
- utf-8 encoding is now the default (PEP 3120)
- Replace list comprehensions by Generator Expressions (PEP 289)
- Replace yield loop by yield from (PEP 380)
- Remove the (object) subclass when defining a class
- Replace the IOError alias by OSError (PEP 3151)
- Define sets with curly braces {} instead of set()
- Remove "r" parameter from open function, which is default

Co-Authored-By: Adeeb Shihadeh <8762862+adeebshihadeh@users.noreply.github.com>
Co-Authored-By: GregorKikelj <96022003+GregorKikelj@users.noreply.github.com>

Co-authored-by: Adeeb Shihadeh <8762862+adeebshihadeh@users.noreply.github.com>
Co-authored-by: GregorKikelj <96022003+GregorKikelj@users.noreply.github.com>
old-commit-hash: 332f568a82

selfdrive/debug/internal/sensor_test_bootloop.py

@@ -17,7 +17,7 @@ except PermissionError:
   print("WARNING: failed to make /dev/shm")
 
 try:
-  with open('/tmp/sensor-test-results.json', 'r') as infile:
+  with open('/tmp/sensor-test-results.json') as infile:
     data = json.load(infile)
 except Exception:
   data = {'sensor-pass': 0, 'sensor-fail': 0}