Build(deps): Bump cloud.google.com/go/functions in /function

Bumps [cloud.google.com/go/functions](https://github.com/googleapis/google-cloud-go) from 1.16.2 to 1.16.3.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/main/CHANGES.md)
- [Commits](googleapis/google-cloud-go@retail/v1.16.2...functions/v1.16.3)

---
updated-dependencies:
- dependency-name: cloud.google.com/go/functions
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

function/go.mod

@@ -6,7 +6,7 @@ toolchain go1.22.0
 
 require (
 	cloud.google.com/go/firestore v1.15.0
-	cloud.google.com/go/functions v1.16.2
+	cloud.google.com/go/functions v1.16.3
 	cloud.google.com/go/pubsub v1.40.0
 	github.com/cockroachdb/errors v1.11.3
 	github.com/deckarep/golang-set v1.8.0

function/go.sum

@@ -9,8 +9,8 @@ cloud.google.com/go/compute/metadata v0.3.0 h1:Tz+eQXMEqDIKRsmY3cHTL6FVaynIjX2Qx
 cloud.google.com/go/compute/metadata v0.3.0/go.mod h1:zFmK7XCadkQkj6TtorcaGlCW1hT1fIilQDwofLpJ20k=
 cloud.google.com/go/firestore v1.15.0 h1:/k8ppuWOtNuDHt2tsRV42yI21uaGnKDEQnRFeBpbFF8=
 cloud.google.com/go/firestore v1.15.0/go.mod h1:GWOxFXcv8GZUtYpWHw/w6IuYNux/BtmeVTMmjrm4yhk=
-cloud.google.com/go/functions v1.16.2 h1:83bd2lCgtu2nLbX2jrqsrQhIs7VuVA1N6Op5syeRVIg=
-cloud.google.com/go/functions v1.16.2/go.mod h1:+gMvV5E3nMb9EPqX6XwRb646jTyVz8q4yk3DD6xxHpg=
+cloud.google.com/go/functions v1.16.3 h1:YMVEpuYdW5pc4yVZO7fevlDridaWVXdFEeoUVJ3omY8=
+cloud.google.com/go/functions v1.16.3/go.mod h1:Uk3Bu1mv6+f27PHh+yOjMAMB0u4LRkn7dxsdHBZmPKM=
 cloud.google.com/go/iam v1.1.8 h1:r7umDwhj+BQyz0ScZMp4QrGXjSTI3ZINnpgU2nlB/K0=
 cloud.google.com/go/iam v1.1.8/go.mod h1:GvE6lyMmfxXauzNq8NbgJbeVQNspG+tcdL/W8QO1+zE=
 cloud.google.com/go/kms v1.17.1 h1:5k0wXqkxL+YcXd4viQzTqCgzzVKKxzgrK+rCZJytEQs=