Bump apscheduler from 3.8.0 to 3.9.1 (#1675)

* Bump apscheduler from 3.8.0 to 3.9.1

Bumps [apscheduler](https://github.com/agronholm/apscheduler) from 3.8.0 to 3.9.1.
- [Release notes](https://github.com/agronholm/apscheduler/releases)
- [Changelog](https://github.com/agronholm/apscheduler/blob/3.9.1/docs/versionhistory.rst)
- [Commits](https://github.com/agronholm/apscheduler/compare/3.8.0...3.9.1)

---
updated-dependencies:
- dependency-name: apscheduler
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update apscheduler==3.9.1

* Update pytz==2022.1

* Add pytz-deprecation-shim==0.1.0.post0

* Update tzdata==2022.1

* Update tzlocal==4.2

* Update requirements.txt

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/apscheduler/util.py

@@ -34,7 +34,7 @@ except ImportError:
 __all__ = ('asint', 'asbool', 'astimezone', 'convert_to_datetime', 'datetime_to_utc_timestamp',
            'utc_timestamp_to_datetime', 'timedelta_seconds', 'datetime_ceil', 'get_callable_name',
            'obj_to_ref', 'ref_to_obj', 'maybe_ref', 'repr_escape', 'check_callable_args',
-           'TIMEOUT_MAX')
+           'normalize', 'localize', 'TIMEOUT_MAX')
 
 
 class _Undefined(object):
@@ -90,9 +90,7 @@ def astimezone(obj):
     if isinstance(obj, six.string_types):
         return timezone(obj)
     if isinstance(obj, tzinfo):
-        if not hasattr(obj, 'localize') or not hasattr(obj, 'normalize'):
-            raise TypeError('Only timezones from the pytz library are supported')
-        if obj.zone == 'local':
+        if obj.tzname(None) == 'local':
             raise ValueError(
                 'Unable to determine the name of the local timezone -- you must explicitly '
                 'specify the name of the local timezone. Please refrain from using timezones like '
@@ -162,11 +160,7 @@ def convert_to_datetime(input, tz, arg_name):
     if isinstance(tz, six.string_types):
         tz = timezone(tz)
 
-    try:
-        return tz.localize(datetime_, is_dst=None)
-    except AttributeError:
-        raise TypeError(
-            'Only pytz timezones are supported (need the localize() and normalize() methods)')
+    return localize(datetime_, tz)
 
 
 def datetime_to_utc_timestamp(timeval):
@@ -431,3 +425,14 @@ def iscoroutinefunction_partial(f):
     # The asyncio version of iscoroutinefunction includes testing for @coroutine
     # decorations vs. the inspect version which does not.
     return iscoroutinefunction(f)
+
+
+def normalize(dt):
+    return datetime.fromtimestamp(dt.timestamp(), dt.tzinfo)
+
+
+def localize(dt, tzinfo):
+    if hasattr(tzinfo, 'localize'):
+        return tzinfo.localize(dt)
+
+    return normalize(dt.replace(tzinfo=tzinfo))