Bump github.com/sashabaranov/go-openai from 1.20.2 to 1.20.3

Bumps [github.com/sashabaranov/go-openai](https://github.com/sashabaranov/go-openai) from 1.20.2 to 1.20.3.
- [Release notes](https://github.com/sashabaranov/go-openai/releases)
- [Commits](sashabaranov/go-openai@v1.20.2...v1.20.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -4,7 +4,7 @@ go 1.22
 
 require (
 	github.com/google/generative-ai-go v0.8.0
-	github.com/sashabaranov/go-openai v1.20.2
+	github.com/sashabaranov/go-openai v1.20.3
 	golang.org/x/time v0.5.0
 	google.golang.org/api v0.169.0
 )

go.sum

@@ -64,8 +64,8 @@ github.com/googleapis/gax-go/v2 v2.12.2/go.mod h1:61M8vcyyXR2kqKFxKrfA22jaA8JGF7
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/sashabaranov/go-openai v1.20.2 h1:nilzF2EKzaHyK4Rk2Dbu/aJEZbtIvskDIXvfS4yx+6M=
-github.com/sashabaranov/go-openai v1.20.2/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
+github.com/sashabaranov/go-openai v1.20.3 h1:JMhaSfE1mLznYIvlf8odxbyWGiFFGnQjyLw00I9R4fU=
+github.com/sashabaranov/go-openai v1.20.3/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=