chore(deps): bump github.com/sashabaranov/go-openai from 1.19.4 to 1.38.1 (#47)

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

Bumps [github.com/sashabaranov/go-openai](https://github.com/sashabaranov/go-openai) from 1.19.4 to 1.38.1.
- [Release notes](https://github.com/sashabaranov/go-openai/releases)
- [Commits](https://github.com/sashabaranov/go-openai/compare/v1.19.4...v1.38.1)

---
updated-dependencies:
- dependency-name: github.com/sashabaranov/go-openai
  dependency-version: 1.38.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

* chore: minor adaptations

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ettore Di Giacinto <mudler@localai.io>

core/types/actions.go

@@ -74,8 +74,8 @@ func (a ActionDefinitionName) String() string {
 	return string(a)
 }
 
-func (a ActionDefinition) ToFunctionDefinition() openai.FunctionDefinition {
-	return openai.FunctionDefinition{
+func (a ActionDefinition) ToFunctionDefinition() *openai.FunctionDefinition {
+	return &openai.FunctionDefinition{
 		Name:        a.Name.String(),
 		Description: a.Description,
 		Parameters: jsonschema.Definition{