Various fixes & improvements

• New integration: Unraisable exceptions (#4733) by @alexander-alderman-webb

  Add the unraisable exception integration to your sentry_sdk.init call:

import sentry_sdk
from sentry_sdk.integrations.unraisablehook import UnraisablehookIntegration

sentry_sdk.init(
    dsn="...",
    integrations=[
        UnraisablehookIntegration(),
    ]
)

• meta: Update instructions on release process (#4755) by @sentrivana
• tests: Move arq under toxgen (#4739) by @sentrivana
• tests: Support dashes in test suite names (#4740) by @sentrivana
• Don't fail if there is no _context_manager_state (#4698) by @sentrivana
• Wrap span restoration in __exit__ in capture_internal_exceptions (#4719) by @sentrivana
• fix: Constrain types of ai_track decorator (#4745) by @alexander-alderman-webb
• Fix openai_agents in CI (#4742) by @sentrivana
• Remove old langchain test suites from ignore list (#4737) by @sentrivana
• tests: Trigger Pytest failure when an unraisable exception occurs (#4738) by @alexander-alderman-webb
• fix(openai): Avoid double exit causing an unraisable exception (#4736) by @alexander-alderman-webb
• tests: Move langchain under toxgen (#4734) by @sentrivana
• toxgen: Add variants & move OpenAI under toxgen (#4730) by @sentrivana
• Update tox.ini (#4731) by @sentrivana