Replace gpt-3-encoder with gpt3-tokenizer

There should be no public changes with this release. It's just changing internals for hopefully better compatibility.

• feat: switch from gpt-3-encoder to gpt3-tokenizer d8eeb1a
• 🚸 fc9869a
• 🚬 2460e5a
• 💐 218bdf8
• 👤 bc3a6ac

v4.5.1...v4.6.0