Update apscheduler==3.8.1

lib/pytz_deprecation_shim/_compat_py3.py

@@ -0,0 +1,58 @@
+# Note: This file could use Python 3-only syntax, but at the moment this breaks
+# the coverage job on Python 2. Until we make it so that coverage can ignore
+# this file only on Python 2, we'll have to stick to 2/3-compatible syntax.
+try:
+    import zoneinfo
+except ImportError:
+    from backports import zoneinfo
+
+import datetime
+
+UTC = datetime.timezone.utc
+
+
+def get_timezone(key):
+    try:
+        return zoneinfo.ZoneInfo(key)
+    except (ValueError, OSError):
+        # TODO: Use `from e` when this file can use Python 3 syntax
+        raise KeyError(key)
+
+
+def get_timezone_file(f, key=None):
+    return zoneinfo.ZoneInfo.from_file(f, key=key)
+
+
+def get_fixed_offset_zone(offset):
+    return datetime.timezone(datetime.timedelta(minutes=offset))
+
+
+def is_imaginary(dt):
+    dt_rt = dt.astimezone(UTC).astimezone(dt.tzinfo)
+
+    return not (dt == dt_rt)
+
+
+def is_ambiguous(dt):
+    if is_imaginary(dt):
+        return False
+
+    wall_0 = dt
+    wall_1 = dt.replace(fold=not dt.fold)
+
+    # Ambiguous datetimes can only exist if the offset changes, so we don't
+    # actually have to check whether dst() or tzname() are different.
+    same_offset = wall_0.utcoffset() == wall_1.utcoffset()
+
+    return not same_offset
+
+
+def enfold(dt, fold=1):
+    if dt.fold != fold:
+        return dt.replace(fold=fold)
+    else:
+        return dt
+
+
+def get_fold(dt):
+    return dt.fold