chore(deps): update dependency types-protobuf to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
types-protobuf (changelog)	>=5,<6 -> >=6,<7

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: poetry.lock

Updating dependencies
Resolving dependencies...

Creating virtualenv protoletariat-bTp2ugnk-py3.13 in /home/ubuntu/.cache/pypoetry/virtualenvs

The current project's supported Python range (>=3.8,<4.0) is not compatible with some of the required packages Python requirement:
  - types-protobuf requires Python >=3.9, so it will not be satisfied for Python >=3.8,<3.9
  - types-protobuf requires Python >=3.9, so it will not be satisfied for Python >=3.8,<3.9
  - types-protobuf requires Python >=3.9, so it will not be satisfied for Python >=3.8,<3.9
  - types-protobuf requires Python >=3.9, so it will not be satisfied for Python >=3.8,<3.9
  - types-protobuf requires Python >=3.9, so it will not be satisfied for Python >=3.8,<3.9
  - types-protobuf requires Python >=3.9, so it will not be satisfied for Python >=3.8,<3.9
  - types-protobuf requires Python >=3.9, so it will not be satisfied for Python >=3.8,<3.9

Because no versions of types-protobuf match >=6,<6.30.2.20250503 || >6.30.2.20250503,<6.30.2.20250506 || >6.30.2.20250506,<6.30.2.20250516 || >6.30.2.20250516,<6.30.2.20250703 || >6.30.2.20250703,<6.30.2.20250809 || >6.30.2.20250809,<6.30.2.20250822 || >6.30.2.20250822,<6.30.2.20250914 || >6.30.2.20250914,<7
 and types-protobuf (6.30.2.20250503) requires Python >=3.9, types-protobuf is forbidden.
And because types-protobuf (6.30.2.20250506) requires Python >=3.9, types-protobuf is forbidden.
And because types-protobuf (6.30.2.20250516) requires Python >=3.9
 and types-protobuf (6.30.2.20250703) requires Python >=3.9, types-protobuf is forbidden.
And because types-protobuf (6.30.2.20250809) requires Python >=3.9
 and types-protobuf (6.30.2.20250822) requires Python >=3.9, types-protobuf is forbidden.
So, because types-protobuf (6.30.2.20250914) requires Python >=3.9
 and protoletariat depends on types-protobuf (>=6,<7), version solving failed.

  • Check your dependencies Python requirement: The Python requirement can be specified via the `python` or `markers` properties
    
    For types-protobuf, a possible solution would be to set the `python` property to ">=3.9,<4.0"
    For types-protobuf, a possible solution would be to set the `python` property to ">=3.9,<4.0"
    For types-protobuf, a possible solution would be to set the `python` property to ">=3.9,<4.0"
    For types-protobuf, a possible solution would be to set the `python` property to ">=3.9,<4.0"
    For types-protobuf, a possible solution would be to set the `python` property to ">=3.9,<4.0"
    For types-protobuf, a possible solution would be to set the `python` property to ">=3.9,<4.0"
    For types-protobuf, a possible solution would be to set the `python` property to ">=3.9,<4.0"

    https://python-poetry.org/docs/dependency-specification/#python-restricted-dependencies,
    https://python-poetry.org/docs/dependency-specification/#using-environment-markers