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

Bumps [github.com/openai/openai-go](https://github.com/openai/openai-go) from 0.1.0-alpha.39 to 0.1.0-alpha.40.
- [Release notes](https://github.com/openai/openai-go/releases)
- [Changelog](https://github.com/openai/openai-go/blob/main/CHANGELOG.md)
- [Commits](openai/openai-go@v0.1.0-alpha.39...v0.1.0-alpha.40)

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

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

go.mod

@@ -5,7 +5,7 @@ go 1.23
 require (
 	github.com/anthropics/anthropic-sdk-go v0.2.0-alpha.5
 	github.com/google/generative-ai-go v0.19.0
-	github.com/openai/openai-go v0.1.0-alpha.39
+	github.com/openai/openai-go v0.1.0-alpha.40
 	github.com/sunshineplan/workers v1.0.4
 	golang.org/x/time v0.8.0
 	google.golang.org/api v0.212.0

go.sum

@@ -33,8 +33,8 @@ github.com/googleapis/enterprise-certificate-proxy v0.3.4 h1:XYIDZApgAnrN1c855gT
 github.com/googleapis/enterprise-certificate-proxy v0.3.4/go.mod h1:YKe7cfqYXjKGpGvmSg28/fFvhNzinZQm8DGnaburhGA=
 github.com/googleapis/gax-go/v2 v2.14.0 h1:f+jMrjBPl+DL9nI4IQzLUxMq7XrAqFYB7hBPqMNIe8o=
 github.com/googleapis/gax-go/v2 v2.14.0/go.mod h1:lhBCnjdLrWRaPvLWhmc8IS24m9mr07qSYnHncrgo+zk=
-github.com/openai/openai-go v0.1.0-alpha.39 h1:FvoNWy7BPhA0TjGOK5huRGU5sAUEx2jeubLXz34K9LE=
-github.com/openai/openai-go v0.1.0-alpha.39/go.mod h1:3SdE6BffOX9HPEQv8IL/fi3LYZ5TUpRYaqGQZbyk11A=
+github.com/openai/openai-go v0.1.0-alpha.40 h1:97Pvd82fcstlJ/kL46tKYiGdm1XAUI4a9IJUWOMTiiU=
+github.com/openai/openai-go v0.1.0-alpha.40/go.mod h1:3SdE6BffOX9HPEQv8IL/fi3LYZ5TUpRYaqGQZbyk11A=
 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/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=