Bump pytz from 2023.3 to 2024.1 (#2254)

* Bump pytz from 2023.3 to 2024.1

Bumps [pytz](https://github.com/stub42/pytz) from 2023.3 to 2024.1.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](https://github.com/stub42/pytz/compare/release_2023.3...release_2024.1)

---
updated-dependencies:
- dependency-name: pytz
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* Update pytz==2024.1

---------

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

@@ -24,7 +24,8 @@ def memorized_timedelta(seconds):
         _timedelta_cache[seconds] = delta
         return delta
 
-_epoch = datetime.utcfromtimestamp(0)
+
+_epoch = datetime(1970, 1, 1, 0, 0) # datetime.utcfromtimestamp(0)
 _datetime_cache = {0: _epoch}
 
 
@@ -33,12 +34,13 @@ def memorized_datetime(seconds):
     try:
         return _datetime_cache[seconds]
     except KeyError:
-        # NB. We can't just do datetime.utcfromtimestamp(seconds) as this
-        # fails with negative values under Windows (Bug #90096)
+        # NB. We can't just do datetime.fromtimestamp(seconds, tz=timezone.utc).replace(tzinfo=None)
+        # as this fails with negative values under Windows (Bug #90096)
         dt = _epoch + timedelta(seconds=seconds)
         _datetime_cache[seconds] = dt
         return dt
 
+
 _ttinfo_cache = {}
 
 
@@ -55,6 +57,7 @@ def memorized_ttinfo(*args):
         _ttinfo_cache[args] = ttinfo
         return ttinfo
 
+
 _notime = memorized_timedelta(0)
 
 
@@ -355,7 +358,7 @@ class DstTzInfo(BaseTzInfo):
                     is_dst=False) + timedelta(hours=6)
 
         # If we get this far, we have multiple possible timezones - this
-        # is an ambiguous case occuring during the end-of-DST transition.
+        # is an ambiguous case occurring during the end-of-DST transition.
 
         # If told to be strict, raise an exception since we have an
         # ambiguous case