fix(deps): Update dependency grpcio to v1.64.0 (#87)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [grpcio](https://grpc.io) ([source](https://togithub.com/grpc/grpc)) | minor | `==1.63.0` -> `==1.64.0` |

---

### Release Notes

<details>
<summary>grpc/grpc (grpcio)</summary>

### [`v1.64.0`](https://togithub.com/grpc/grpc/releases/tag/v1.64.0)

[Compare Source](https://togithub.com/grpc/grpc/compare/v1.63.0...v1.64.0)

This is release 1.64.0 ([grateful](https://togithub.com/grpc/grpc/blob/master/doc/g_stands_for.md)) of gRPC Core.

For gRPC documentation, see [grpc.io](https://grpc.io/). For previous releases, see [Releases](https://togithub.com/grpc/grpc/releases).

This release contains refinements, improvements, and bug fixes, with highlights listed below.

## Core

-   \[BoringSSL] Update third_party/boringssl-with-bazel. ([#&#8203;36435](https://togithub.com/grpc/grpc/pull/36435))
-   \[build] Restrict visibility of grpc_public_hdrs and grpc++\_public_hdrs. ([#&#8203;36289](https://togithub.com/grpc/grpc/pull/36289))
-   \[Deps] Rollfoward Protobuf upgrade to v26.1. ([#&#8203;36323](https://togithub.com/grpc/grpc/pull/36323))

## C++

-   \[CSM] Fix CSM Observability for trailers-only response. ([#&#8203;36413](https://togithub.com/grpc/grpc/pull/36413))
-   \[CSM] Remove requirement that servers have to be xDS enabled. ([#&#8203;36410](https://togithub.com/grpc/grpc/pull/36410))

## Python

-   \[Asyncio] Semantic task names for RPC tasks. ([#&#8203;36422](https://togithub.com/grpc/grpc/pull/36422))
-   \[python/systemd] allow compiling systemd support into python builds. ([#&#8203;36037](https://togithub.com/grpc/grpc/pull/36037))
-   \[Python Otel] Remove opentelemetry version pin. ([#&#8203;36448](https://togithub.com/grpc/grpc/pull/36448))
-   \[Python Otel] Use registered method at server side. ([#&#8203;36371](https://togithub.com/grpc/grpc/pull/36371))
-   \[Python grpcio_tools] Update version requirement of protobuf in grpcio_tools. ([#&#8203;36230](https://togithub.com/grpc/grpc/pull/36230))

</details>

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requirements.txt

@@ -1,6 +1,6 @@
 black==24.4.2
 grpcio-tools==1.63.0
-grpcio==1.63.0
+grpcio==1.64.0
 protobuf==5.26.1
 pyarrow==15.0.2
 pytest==8.2.1