chore(deps): bump google.golang.org/genai from 1.71.0 to 1.72.0

Bumps [google.golang.org/genai](https://github.com/googleapis/go-genai) from 1.71.0 to 1.72.0.
- [Release notes](https://github.com/googleapis/go-genai/releases)
- [Changelog](https://github.com/googleapis/go-genai/blob/main/CHANGELOG.md)
- [Commits](googleapis/go-genai@v1.71.0...v1.72.0)

---
updated-dependencies:
- dependency-name: google.golang.org/genai
  dependency-version: 1.72.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/plexusone/phoenix-go v0.2.1
 	github.com/plexusone/vaultguard v0.3.1
 	google.golang.org/adk v1.8.0
-	google.golang.org/genai v1.71.0
+	google.golang.org/genai v1.72.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 

go.sum

@@ -366,8 +366,8 @@ google.golang.org/adk v1.8.0 h1:iqLsTvbkoGWhfVKzlyLr2FDTK0sHz0QWaGNVZY5DJ4o=
 google.golang.org/adk v1.8.0/go.mod h1:oT+rWCkv5RmheB18bKTyUeqhdPcwD3kWE4Gs6/UcnNY=
 google.golang.org/api v0.289.0 h1:DmH0c6NigNFmsvsohM9bxv+MzVhag3aGHnojA5fFQjc=
 google.golang.org/api v0.289.0/go.mod h1:weJZ3lldHFYI0DBFNKpJelUDNnusTt5YaOEgxvt8ci8=
-google.golang.org/genai v1.71.0 h1:Wfo9n0uSzMhZH7d+rP7QxxSWELEDSD4z6O8W/C9s3oM=
-google.golang.org/genai v1.71.0/go.mod h1:mDdPDFXo1Ats7f1WXVyZgWb/CkMzFWTWJruIMy7hGIU=
+google.golang.org/genai v1.72.0 h1:sn3V1cHkHQhMcjtUrO2y1r54jprbFjmeokBU1IKfpZk=
+google.golang.org/genai v1.72.0/go.mod h1:2j40fGpqPPIZNjaDKmjGGjYwCJi6Nm2ofmyP65GnqtY=
 google.golang.org/genproto v0.0.0-20260911204522-f61a6ca850bd h1:s/EXdxMDrmT++u0VepJKO4U6dzOPJVRdHKmrazC1Qxg=
 google.golang.org/genproto v0.0.0-20260911204522-f61a6ca850bd/go.mod h1:JfZ1Hyx5mAJgX/ip0vEicmPvzE6rIrbacB7rHMfjD7Q=
 google.golang.org/genproto/googleapis/api v0.0.0-20260803160001-6ac0973c030d h1:FarXi840EJWSHYTN3ERkADbPWjl307+FGrA22KAVjjc=