chore(deps): bump google.golang.org/genai from 1.48.0 to 1.57.0

Bumps [google.golang.org/genai](https://github.com/googleapis/go-genai) from 1.48.0 to 1.57.0.
- [Release notes](https://github.com/googleapis/go-genai/releases)
- [Changelog](https://github.com/googleapis/go-genai/blob/main/CHANGELOG.md)
- [Commits](googleapis/go-genai@v1.48.0...v1.57.0)

---
updated-dependencies:
- dependency-name: google.golang.org/genai
  dependency-version: 1.57.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/slack-go/slack v0.18.0
 	github.com/spf13/cobra v1.10.2
 	github.com/stretchr/testify v1.11.1
-	google.golang.org/genai v1.48.0
+	google.golang.org/genai v1.57.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 

go.sum

@@ -207,8 +207,8 @@ golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBn
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genai v1.48.0 h1:1vb15G291wAjJJueisMDpUhssljhEdJU2t5qTidrVPs=
-google.golang.org/genai v1.48.0/go.mod h1:A3kkl0nyBjyFlNjgxIwKq70julKbIxpSxqKO5gw/gmk=
+google.golang.org/genai v1.57.0 h1:qTyG2ynz5dQy2jF4CvZdLHHVslhR0heMue+zM1a4GNM=
+google.golang.org/genai v1.57.0/go.mod h1:A3kkl0nyBjyFlNjgxIwKq70julKbIxpSxqKO5gw/gmk=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=