chore(deps): update dependency com_google_protobuf to v3.21.8 (#1217)
chore(deps): update dependency com_google_protobuf to v3.21.8 (#1217)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [com_google_protobuf](https://togithub.com/protocolbuffers/protobuf) | http_archive | patch | `v3.21.5` -> `v3.21.8` |

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### Release Notes

<details>
<summary>protocolbuffers/protobuf</summary>

### [`v3.21.8`](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.7...v3.21.8)

[Compare Source](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.7...v3.21.8)

### [`v3.21.7`](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.6...v3.21.7)

[Compare Source](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.6...v3.21.7)

### [`v3.21.6`](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.5...v3.21.6)

[Compare Source](https://togithub.com/protocolbuffers/protobuf/compare/v3.21.5...v3.21.6)

</details>

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