upgrade pypandoc to 1.17

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

bot/requirements.txt

@@ -3,7 +3,7 @@ asyncpg==0.32.*
 discord.py==2.7.*
 psutil==7.2.*
 pydantic==2.14.*
-pypandoc==1.13.*
+pypandoc==1.17.*
 python-dotenv==1.2.*
 regex==2023.12.25
 tzdata  # This only needed if run on windows. I haven't set a version either to ensure it's up to date.