fix(deps): update module github.com/sashabaranov/go-openai to v1.15.4 (#1122)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[github.com/sashabaranov/go-openai](https://togithub.com/sashabaranov/go-openai)
| require | patch | `v1.15.3` -> `v1.15.4` |

---

### Release Notes

<details>
<summary>sashabaranov/go-openai
(github.com/sashabaranov/go-openai)</summary>

###
[`v1.15.4`](https://togithub.com/sashabaranov/go-openai/releases/tag/v1.15.4)

[Compare
Source](https://togithub.com/sashabaranov/go-openai/compare/v1.15.3...v1.15.4)

#### What's Changed

- added delete fine tune model endpoint by
[@&#8203;BrendanMartin](https://togithub.com/BrendanMartin) in
[https://github.com/sashabaranov/go-openai/pull/497](https://togithub.com/sashabaranov/go-openai/pull/497)

**Full Changelog**:
https://github.com/sashabaranov/go-openai/compare/v1.15.3...v1.15.4

</details>

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go.mod

@@ -26,7 +26,7 @@ require (
 	github.com/otiai10/openaigo v1.6.0
 	github.com/phayes/freeport v0.0.0-20220201140144-74d24b5ae9f5
 	github.com/rs/zerolog v1.30.0
-	github.com/sashabaranov/go-openai v1.15.3
+	github.com/sashabaranov/go-openai v1.15.4
 	github.com/tmc/langchaingo v0.0.0-20230929160525-e16b77704b8d
 	github.com/urfave/cli/v2 v2.25.7
 	github.com/valyala/fasthttp v1.50.0

go.sum

@@ -171,6 +171,8 @@ github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sashabaranov/go-openai v1.15.3 h1:rzoNK9n+Cak+PM6OQ9puxDmFllxfnVea9StlmhglXqA=
 github.com/sashabaranov/go-openai v1.15.3/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
+github.com/sashabaranov/go-openai v1.15.4 h1:BXCR0Uxk5RipeY4yBC7g6pBVfcjh8jwrMNOYdie6yuk=
+github.com/sashabaranov/go-openai v1.15.4/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
 github.com/shirou/gopsutil/v3 v3.23.7/go.mod h1:c4gnmoRC0hQuaLqvxnx1//VXQ0Ms/X9UnJF8pddY5z4=
 github.com/shirou/gopsutil/v3 v3.23.8 h1:xnATPiybo6GgdRoC4YoGnxXZFRc3dqQTGi73oLvvBrE=
 github.com/shirou/gopsutil/v3 v3.23.8/go.mod h1:7hmCaBn+2ZwaZOr6jmPBZDfawwMGuo1id3C6aM8EDqQ=