Bump github.com/grpc-ecosystem/grpc-gateway/v2 from 2.11.3 to 2.15.2

Bumps [github.com/grpc-ecosystem/grpc-gateway/v2](https://github.com/grpc-ecosystem/grpc-gateway) from 2.11.3 to 2.15.2.
- [Release notes](https://github.com/grpc-ecosystem/grpc-gateway/releases)
- [Changelog](https://github.com/grpc-ecosystem/grpc-gateway/blob/main/.goreleaser.yml)
- [Commits](grpc-ecosystem/grpc-gateway@v2.11.3...v2.15.2)

---
updated-dependencies:
- dependency-name: github.com/grpc-ecosystem/grpc-gateway/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -4,14 +4,14 @@ go 1.18
 
 require (
 	github.com/authzed/grpcutil v0.0.0-20210913124023-cad23ae5a9e8
-	github.com/envoyproxy/protoc-gen-validate v0.6.7
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.11.3
+	github.com/envoyproxy/protoc-gen-validate v0.9.1
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.15.2
 	github.com/jzelinskie/stringz v0.0.0-20210414224931-d6a8ce844a70
 	github.com/planetscale/vtprotobuf v0.3.1-0.20220817155510-0ae748fd2007
 	github.com/stretchr/testify v1.8.0
-	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4
-	google.golang.org/genproto v0.0.0-20220822174746-9e6da59bd2fc
-	google.golang.org/grpc v1.49.0
+	golang.org/x/sync v0.1.0
+	google.golang.org/genproto v0.0.0-20230223222841-637eb2293923
+	google.golang.org/grpc v1.53.0
 	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.2.0
 	google.golang.org/protobuf v1.28.1
 )
@@ -27,10 +27,10 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/spf13/afero v1.9.2 // indirect
 	golang.org/x/lint v0.0.0-20210508222113-6edffad5e616 // indirect
-	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
-	golang.org/x/net v0.0.0-20220909164309-bea034e7d591 // indirect
-	golang.org/x/sys v0.0.0-20220818161305-2296e01440c6 // indirect
-	golang.org/x/text v0.3.7 // indirect
-	golang.org/x/tools v0.1.12 // indirect
+	golang.org/x/mod v0.7.0 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
+	golang.org/x/tools v0.3.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )