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/pytz_deprecation_shim/helpers.py

@@ -0,0 +1,90 @@
+"""
+This module contains helper functions to ease the transition from ``pytz`` to
+another :pep:`495`-compatible library.
+"""
+from . import _common, _compat
+from ._impl import _PytzShimTimezone
+
+_PYTZ_BASE_CLASSES = None
+
+
+def is_pytz_zone(tz):
+    """Check if a time zone is a ``pytz`` time zone.
+
+    This will only import ``pytz`` if it has already been imported, and does
+    not rely on the existence of the ``localize`` or ``normalize`` methods
+    (since the shim classes also have these methods, but are not ``pytz``
+    zones).
+    """
+
+    # If pytz is not in sys.modules, then we will assume the time zone is not a
+    # pytz zone. It is possible that someone has manipulated sys.modules to
+    # remove pytz, but that's the kind of thing that causes all kinds of other
+    # problems anyway, so we'll call that an unsupported configuration.
+    if not _common.pytz_imported():
+        return False
+
+    if _PYTZ_BASE_CLASSES is None:
+        _populate_pytz_base_classes()
+
+    return isinstance(tz, _PYTZ_BASE_CLASSES)
+
+
+def upgrade_tzinfo(tz):
+    """Convert a ``pytz`` or shim timezone into its modern equivalent.
+
+    The shim classes are thin wrappers around :mod:`zoneinfo` or
+    :mod:`dateutil.tz` implementations of the :class:`datetime.tzinfo` base
+    class. This function removes the shim and returns the underlying "upgraded"
+    time zone.
+
+    When passed a ``pytz`` zone (not a shim), this returns the non-``pytz``
+    equivalent. This may fail if ``pytz`` is using a data source incompatible
+    with the upgraded provider's data source, or if the ``pytz`` zone was built
+    from a file rather than an IANA key.
+
+    When passed an object that is not a shim or a ``pytz`` zone, this returns
+    the original object.
+
+    :param tz:
+        A :class:`datetime.tzinfo` object.
+
+    :raises KeyError:
+        If a ``pytz`` zone is passed to the function with no equivalent in the
+        :pep:`495`-compatible library's version of the Olson database.
+
+    :return:
+        A :pep:`495`-compatible equivalent of any ``pytz`` or shim
+        class, or the original object.
+    """
+    if isinstance(tz, _PytzShimTimezone):
+        return tz._zone
+
+    if is_pytz_zone(tz):
+        if tz.zone is None:
+            # This is a fixed offset zone
+            offset = tz.utcoffset(None)
+            offset_minutes = offset.total_seconds() / 60
+
+            return _compat.get_fixed_offset_zone(offset_minutes)
+
+        if tz.zone == "UTC":
+            return _compat.UTC
+
+        return _compat.get_timezone(tz.zone)
+
+    return tz
+
+
+def _populate_pytz_base_classes():
+    import pytz
+    from pytz.tzinfo import BaseTzInfo
+
+    base_classes = (BaseTzInfo, pytz._FixedOffset)
+
+    # In releases prior to 2018.4, pytz.UTC was not a subclass of BaseTzInfo
+    if not isinstance(pytz.UTC, BaseTzInfo):  # pragma: nocover
+        base_classes = base_classes + (type(pytz.UTC),)
+
+    global _PYTZ_BASE_CLASSES
+    _PYTZ_BASE_CLASSES = base_classes