Fix dt warnings with timezones

src/pendulum/__init__.py

@@ -292,7 +292,7 @@ def from_timestamp(timestamp: int | float, tz: str | Timezone = UTC) -> DateTime
     """
     Create a DateTime instance from a timestamp.
     """
-    dt = _datetime.datetime.utcfromtimestamp(timestamp)
+    dt = _datetime.datetime.fromtimestamp(timestamp, tz=_datetime.UTC)
 
     dt = datetime(
         dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.microsecond

src/pendulum/datetime.py

@@ -1259,7 +1259,7 @@ def fromtimestamp(cls, t: float, tz: datetime.tzinfo | None = None) -> Self:
 
     @classmethod
     def utcfromtimestamp(cls, t: float) -> Self:
-        return cls.instance(datetime.datetime.utcfromtimestamp(t), tz=None)
+        return cls.instance(datetime.datetime.fromtimestamp(t, datetime.UTC), tz=None)
 
     @classmethod
     def fromordinal(cls, n: int) -> Self:

tests/datetime/test_behavior.py

@@ -102,7 +102,7 @@ def test_fromtimestamp():
 
 def test_utcfromtimestamp():
     p = pendulum.DateTime.utcfromtimestamp(0)
-    dt = datetime.utcfromtimestamp(0)
+    dt = datetime.fromtimestamp(0, pendulum.UTC)
 
     assert p == dt