Bump grpcio-tools from 1.63.0 to 1.64.0 in the pip group

Bumps the pip group with 1 update: [grpcio-tools](https://github.com/grpc/grpc).


Updates `grpcio-tools` from 1.63.0 to 1.64.0
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.63.0...v1.64.0)

---
updated-dependencies:
- dependency-name: grpcio-tools
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pip
...

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

Author: dependabot[bot]

poetry.lock

@@ -23,7 +23,7 @@ typing-extensions = ">=3.7.4,<5"
 [tool.poetry.group.dev.dependencies]
 black = ">=23.3,<25.0"
 grpc-stubs = "^1.53"
-grpcio-tools = ">=1.63,<1.64"
+grpcio-tools = ">=1.63,<1.65"
 isort = "^5.6.4"
 mypy = "1.10.0"
 mypy-protobuf = "3.6.0"