Fix Python <3.11 incompatibility bug (#306)

datetime.UTC is not supported on Python <3.11.

Signed-off-by: rany <rany2@riseup.net>

src/edge_tts/drm.py

@@ -1,6 +1,6 @@
 """This module contains functions for generating the Sec-MS-GEC and Sec-MS-GEC-Version tokens."""
 
-import datetime
+from datetime import datetime, timezone
 import hashlib
 
 from .constants import CHROMIUM_FULL_VERSION, TRUSTED_CLIENT_TOKEN
@@ -12,9 +12,7 @@ def generate_sec_ms_gec_token() -> str:
     See: https://github.com/rany2/edge-tts/issues/290#issuecomment-2464956570"""
 
     # Get the current time in Windows file time format (100ns intervals since 1601-01-01)
-    ticks = int(
-        (datetime.datetime.now(datetime.UTC).timestamp() + 11644473600) * 10000000
-    )
+    ticks = int((datetime.now(timezone.utc).timestamp() + 11644473600) * 10000000)
 
     # Round down to the nearest 5 minutes (3,000,000,000 * 100ns = 5 minutes)
     ticks -= ticks % 3_000_000_000
@@ -22,12 +20,8 @@ def generate_sec_ms_gec_token() -> str:
     # Create the string to hash by concatenating the ticks and the trusted client token
     str_to_hash = f"{ticks}{TRUSTED_CLIENT_TOKEN}"
 
-    # Compute the SHA256 hash
-    hash_object = hashlib.sha256(str_to_hash.encode("ascii"))
-    hex_dig = hash_object.hexdigest()
-
-    # Return the hexadecimal representation of the hash
-    return hex_dig.upper()
+    # Compute the SHA256 hash and return the uppercased hex digest
+    return hashlib.sha256(str_to_hash.encode("ascii")).hexdigest().upper()
 
 
 def generate_sec_ms_gec_version() -> str: