chore(deps): bump the client-python group across 1 directory with 3 updates

Bumps the client-python group with 3 updates in the /client/python directory: [grpcio](https://github.com/grpc/grpc), [grpcio-tools](https://github.com/grpc/grpc) and [coverage](https://github.com/coveragepy/coveragepy).


Updates `grpcio` from 1.76.0 to 1.78.0
- [Release notes](https://github.com/grpc/grpc/releases)
- [Commits](grpc/grpc@v1.76.0...v1.78.0)

Updates `grpcio-tools` from 1.76.0 to 1.78.0
- [Release notes](https://github.com/grpc/grpc/releases)
- [Commits](grpc/grpc@v1.76.0...v1.78.0)

Updates `coverage` from 6.5.0 to 7.10.7
- [Release notes](https://github.com/coveragepy/coveragepy/releases)
- [Changelog](https://github.com/coveragepy/coveragepy/blob/main/CHANGES.rst)
- [Commits](coveragepy/coveragepy@6.5.0...7.10.7)

---
updated-dependencies:
- dependency-name: grpcio
  dependency-version: 1.78.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: client-python
- dependency-name: grpcio-tools
  dependency-version: 1.78.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: client-python
- dependency-name: coverage
  dependency-version: 7.10.7
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: client-python
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

client/python/pyproject.toml

@@ -4,15 +4,15 @@ version = "0.4.13"
 description = "Armada gRPC API python client"
 readme = "README.md"
 requires-python = ">=3.9"
-dependencies = ["grpcio==1.76.0", "grpcio-tools==1.76.0", "mypy-protobuf>=3.6.0", "protobuf>=6.32.1" ]
+dependencies = ["grpcio==1.78.0", "grpcio-tools==1.78.0", "mypy-protobuf>=3.6.0", "protobuf>=6.32.1" ]
 license = { text = "Apache Software License" }
 authors = [{ name = "G-Research Open Source Software", email = "armada@armadaproject.io" }]
 
 [project.optional-dependencies]
 format = ["black>=23.7.0", "flake8>=7.0.0", "pylint>=2.17.5"]
 # note(JayF): sphinx-jekyll-builder was broken by sphinx-markdown-builder 0.6 -- so pin to 0.5.5
 docs = ["sphinx==7.1.2", "sphinx-jekyll-builder==0.3.0", "sphinx-toolbox==3.2.0b1", "sphinx-markdown-builder==0.5.5"]
-test = ["pytest==7.3.1", "coverage==6.5.0", "pytest-asyncio==0.21.1"]
+test = ["pytest==7.3.1", "coverage==7.10.7", "pytest-asyncio==0.21.1"]
 
 [build-system]
 requires = ["setuptools"]