⬆️ Bump google.golang.org/genai from 1.57.0 to 1.58.0

Bumps [google.golang.org/genai](https://github.com/googleapis/go-genai) from 1.57.0 to 1.58.0.
- [Release notes](https://github.com/googleapis/go-genai/releases)
- [Changelog](https://github.com/googleapis/go-genai/blob/main/CHANGELOG.md)
- [Commits](googleapis/go-genai@v1.57.0...v1.58.0)

---
updated-dependencies:
- dependency-name: google.golang.org/genai
  dependency-version: 1.58.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

go.mod

@@ -74,7 +74,7 @@ require (
 	golang.org/x/text v0.37.0 // indirect
 	google.golang.org/adk v1.3.0
 	google.golang.org/api v0.281.0
-	google.golang.org/genai v1.57.0
+	google.golang.org/genai v1.58.0
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v3 v3.0.1
 )

go.sum

@@ -151,8 +151,8 @@ google.golang.org/adk v1.3.0 h1:paUr9uM2qANnMUAQ4ydMXMCnM1HtymhDYl8y7gnKvqs=
 google.golang.org/adk v1.3.0/go.mod h1:R8tNFnI/eiBXHn7zJPJtqdiK/WXC+tVkyuZsXyNZXN4=
 google.golang.org/api v0.281.0 h1:sohYgszGGg3zC0P6ncdV6J9IOBtN9LVfFKz8C9tTtJU=
 google.golang.org/api v0.281.0/go.mod h1:6Wssta4c5n9qHq5CBhmlai5h/PUa1djdDAIhYEHyvcM=
-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/genai v1.58.0 h1:MNA3ZkRyr7MnRwZ9RNZ60p4+UMKV3yYRw6pyHq4pp0U=
+google.golang.org/genai v1.58.0/go.mod h1:A3kkl0nyBjyFlNjgxIwKq70julKbIxpSxqKO5gw/gmk=
 google.golang.org/genproto v0.0.0-20260319201613-d00831a3d3e7 h1:XzmzkmB14QhVhgnawEVsOn6OFsnpyxNPRY9QV01dNB0=
 google.golang.org/genproto v0.0.0-20260319201613-d00831a3d3e7/go.mod h1:L43LFes82YgSonw6iTXTxXUX1OlULt4AQtkik4ULL/I=
 google.golang.org/genproto/googleapis/api v0.0.0-20260427160629-7cedc36a6bc4 h1:yOzSCGPx+cp5VO7IxvZ9SBFF7j1tZVcNtlHR2iYKtVo=