Run a more strict formatter over the code (#11312)

* Update tooling

* Run gofumpt

* go mod vendor

sdk/database/dbplugin/server.go

@@ -28,12 +28,12 @@ func ServeConfig(db Database, tlsProvider func() (*tls.Config, error)) *plugin.S
 		// since it's possible old plugins built against this version will still
 		// work with gRPC. There is currently no difference between version 3
 		// and version 4.
-		3: plugin.PluginSet{
+		3: {
 			"database": &GRPCDatabasePlugin{
 				Impl: db,
 			},
 		},
-		4: plugin.PluginSet{
+		4: {
 			"database": &GRPCDatabasePlugin{
 				Impl: db,
 			},