chore(deps): bump github.com/sashabaranov/go-openai from 1.39.1 to 1.40.0 (#170)

chore(deps): bump github.com/sashabaranov/go-openai

Bumps [github.com/sashabaranov/go-openai](https://github.com/sashabaranov/go-openai) from 1.39.1 to 1.40.0.
- [Release notes](https://github.com/sashabaranov/go-openai/releases)
- [Commits](https://github.com/sashabaranov/go-openai/compare/v1.39.1...v1.40.0)

---
updated-dependencies:
- dependency-name: github.com/sashabaranov/go-openai
  dependency-version: 1.40.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/onsi/gomega v1.37.0
 	github.com/philippgille/chromem-go v0.7.0
 	github.com/robfig/cron/v3 v3.0.1
-	github.com/sashabaranov/go-openai v1.39.1
+	github.com/sashabaranov/go-openai v1.40.0
 	github.com/slack-go/slack v0.16.0
 	github.com/thoj/go-ircevent v0.0.0-20210723090443-73e444401d64
 	github.com/tmc/langchaingo v0.1.13