build(deps): Bump google.golang.org/grpc from 1.62.1 to 1.68.0 in /tests

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.62.1 to 1.68.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.62.1...v1.68.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

tests/go.mod

@@ -1,8 +1,7 @@
 module github.com/cosmos/cosmos-sdk/tests
 
 go 1.22
-
-toolchain go1.22.0
+toolchain go1.22.9
 
 require (
 	cosmossdk.io/api v0.7.3
@@ -29,8 +28,8 @@ require (
 	github.com/golang/mock v1.6.0
 	github.com/spf13/cobra v1.8.0
 	github.com/stretchr/testify v1.9.0
-	google.golang.org/grpc v1.62.1
-	google.golang.org/protobuf v1.33.0
+	google.golang.org/grpc v1.68.0
+	google.golang.org/protobuf v1.34.2
 	gotest.tools/v3 v3.5.1
 	pgregory.net/rapid v1.1.0
 )
@@ -54,8 +53,7 @@ require (
 	buf.build/gen/go/cosmos/gogo-proto/protocolbuffers/go v1.32.0-20230509103710-5e5b9fdd0180.1 // indirect
 	buf.build/gen/go/tendermint/tendermint/protocolbuffers/go v1.32.0-20231117195010-33ed361a9051.1 // indirect
 	cloud.google.com/go v0.112.0 // indirect
-	cloud.google.com/go/compute v1.24.0 // indirect
-	cloud.google.com/go/compute/metadata v0.2.3 // indirect
+	cloud.google.com/go/compute/metadata v0.5.0 // indirect
 	cloud.google.com/go/iam v1.1.6 // indirect
 	cloud.google.com/go/storage v1.36.0 // indirect
 	cosmossdk.io/client/v2 v2.0.0-20230630094428-02b760776860 // indirect
@@ -75,7 +73,7 @@ require (
 	github.com/bufbuild/protocompile v0.8.0 // indirect
 	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/chzyer/readline v1.5.1 // indirect
 	github.com/cockroachdb/apd/v2 v2.0.2 // indirect
 	github.com/cockroachdb/errors v1.11.1 // indirect
@@ -112,7 +110,7 @@ require (
 	github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2 // indirect
 	github.com/gogo/googleapis v1.4.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/glog v1.2.0 // indirect
+	github.com/golang/glog v1.2.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
@@ -200,22 +198,21 @@ require (
 	go.opentelemetry.io/otel/metric v1.22.0 // indirect
 	go.opentelemetry.io/otel/trace v1.22.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.21.0 // indirect
+	golang.org/x/crypto v0.27.0 // indirect
 	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
-	golang.org/x/mod v0.15.0 // indirect
-	golang.org/x/net v0.22.0 // indirect
-	golang.org/x/oauth2 v0.18.0 // indirect
-	golang.org/x/sync v0.6.0 // indirect
-	golang.org/x/sys v0.18.0 // indirect
-	golang.org/x/term v0.18.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/mod v0.17.0 // indirect
+	golang.org/x/net v0.29.0 // indirect
+	golang.org/x/oauth2 v0.23.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/sys v0.25.0 // indirect
+	golang.org/x/term v0.24.0 // indirect
+	golang.org/x/text v0.18.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
-	golang.org/x/tools v0.18.0 // indirect
+	golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d // indirect
 	google.golang.org/api v0.162.0 // indirect
-	google.golang.org/appengine v1.6.8 // indirect
 	google.golang.org/genproto v0.0.0-20240213162025-012b6fc9bca9 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20240205150955-31a09d347014 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240221002015-b0ce06bbee7c // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240903143218-8af14fe29dc1 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	nhooyr.io/websocket v1.8.6 // indirect