Resolve datetime deprecation warnings (#3433)

* Resolve datetime deprecation warnings

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>

* Resolve datetime deprecation warnings

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>

---------

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>
Co-authored-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>

Author: emmanuel-ferdman

exporter/opentelemetry-exporter-richconsole/src/opentelemetry/exporter/richconsole/__init__.py

@@ -68,7 +68,9 @@
 
 
 def _ns_to_time(nanoseconds):
-    ts = datetime.datetime.utcfromtimestamp(nanoseconds / 1e9)
+    ts = datetime.datetime.fromtimestamp(
+        nanoseconds / 1e9, datetime.timezone.utc
+    )
     return ts.strftime("%H:%M:%S.%f")