feat(networkservices): update the API

#### networkservices:v1beta1

The following keys were added:
- schemas.ExtensionChainExtension.properties.observabilityMode.description
- schemas.ExtensionChainExtension.properties.observabilityMode.type

The following keys were changed:
- resources.projects.resources.locations.methods.list.parameters.extraLocationTypes.description
- resources.projects.resources.locations.resources.endpointPolicies.methods.create.parameters.parent.description
- resources.projects.resources.locations.resources.endpointPolicies.methods.delete.parameters.name.description
- resources.projects.resources.locations.resources.endpointPolicies.methods.get.parameters.name.description
- resources.projects.resources.locations.resources.endpointPolicies.methods.list.parameters.parent.description
- resources.projects.resources.locations.resources.endpointPolicies.methods.patch.parameters.name.description
- resources.projects.resources.locations.resources.grpcRoutes.methods.create.parameters.parent.description
- resources.projects.resources.locations.resources.grpcRoutes.methods.delete.parameters.name.description
- resources.projects.resources.locations.resources.grpcRoutes.methods.get.parameters.name.description
- resources.projects.resources.locations.resources.grpcRoutes.methods.list.parameters.parent.description
- resources.projects.resources.locations.resources.grpcRoutes.methods.patch.parameters.name.description
- resources.projects.resources.locations.resources.httpRoutes.methods.create.parameters.parent.description
- resources.projects.resources.locations.resources.httpRoutes.methods.delete.parameters.name.description
- resources.projects.resources.locations.resources.httpRoutes.methods.get.parameters.name.description
- resources.projects.resources.locations.resources.httpRoutes.methods.list.parameters.parent.description
- resources.projects.resources.locations.resources.httpRoutes.methods.patch.parameters.name.description
- resources.projects.resources.locations.resources.meshes.methods.create.parameters.parent.description
- resources.projects.resources.locations.resources.meshes.methods.delete.parameters.name.description
- resources.projects.resources.locations.resources.meshes.methods.get.parameters.name.description
- resources.projects.resources.locations.resources.meshes.methods.list.parameters.parent.description
- resources.projects.resources.locations.resources.meshes.methods.patch.parameters.name.description
- resources.projects.resources.locations.resources.tcpRoutes.methods.create.parameters.parent.description
- resources.projects.resources.locations.resources.tcpRoutes.methods.delete.parameters.name.description
- resources.projects.resources.locations.resources.tcpRoutes.methods.get.parameters.name.description
- resources.projects.resources.locations.resources.tcpRoutes.methods.list.parameters.parent.description
- resources.projects.resources.locations.resources.tcpRoutes.methods.patch.parameters.name.description
- resources.projects.resources.locations.resources.tlsRoutes.methods.create.parameters.parent.description
- resources.projects.resources.locations.resources.tlsRoutes.methods.delete.parameters.name.description
- resources.projects.resources.locations.resources.tlsRoutes.methods.get.parameters.name.description
- resources.projects.resources.locations.resources.tlsRoutes.methods.list.parameters.parent.description
- resources.projects.resources.locations.resources.tlsRoutes.methods.patch.parameters.name.description
- schemas.EndpointPolicy.properties.name.description
- schemas.GrpcRoute.properties.gateways.description
- schemas.GrpcRoute.properties.meshes.description
- schemas.GrpcRoute.properties.name.description
- schemas.HttpRoute.properties.gateways.description
- schemas.HttpRoute.properties.meshes.description
- schemas.HttpRoute.properties.name.description
- schemas.Mesh.properties.name.description
- schemas.TcpRoute.properties.gateways.description
- schemas.TcpRoute.properties.meshes.description
- schemas.TcpRoute.properties.name.description
- schemas.TlsRoute.properties.gateways.description
- schemas.TlsRoute.properties.meshes.description
- schemas.TlsRoute.properties.name.description

Author: yoshi-automation