@google-cloud/common: teeny-request using removed timeout option from node-fetch

It seems that teeny-request is using a [timeout](https://github.com/googleapis/google-cloud-node/blob/7fad2f6e2ef0b16ab87a92ae471136fe6f2655ef/core/packages/teeny-request/src/index.ts#L35) attribute that was a valid option in node-fetch v2 (see [Options](https://github.com/node-fetch/node-fetch/tree/2.x?tab=readme-ov-file#options)) but seems to have been removed in node-fetch v3 (compare with [Options](https://github.com/node-fetch/node-fetch/tree/main?tab=readme-ov-file#options)).

It seems that as of node-fetch v3 the timeout should be implemented using an [AbortSignal](https://github.com/node-fetch/node-fetch/tree/main?tab=readme-ov-file#request-cancellation-with-abortsignal).