Update dependency pydantic_core to v2.39.0 (#164)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

video-transcripts/requirements.txt

@@ -35,7 +35,7 @@ protobuf==5.29.5
 pyasn1==0.6.1
 pyasn1_modules==0.4.2
 pydantic==2.11.7
-pydantic_core==2.23.4
+pydantic_core==2.39.0
 pyparsing==3.2.3
 python-dateutil==2.9.0.post0
 python-dotenv==1.1.1