build(deps): bump protobuf from 3.20.3 to 4.25.8 in /ci/fireci (#7037)

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from
3.20.3 to 4.25.8.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/a4cbdd3ed0042e8f9b9c30e8b0634096d9532809"><code>a4cbdd3</code></a>
Updating version.json and repo version numbers to: 25.8</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/29445be43d3235115f1f60c874a04c2147ea0488"><code>29445be</code></a>
Merge pull request <a
href="https://redirect.github.com/protocolbuffers/protobuf/issues/21880">#21880</a>
from shaod2/py-25</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/cc13b69985f90f6f142b7c3f9cb6bdebee9b4579"><code>cc13b69</code></a>
Remove debugging code and add EOLs</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/d31100c9195819edb0a12f44705dfc2da111ea9b"><code>d31100c</code></a>
Manually backport recursion limit enforcement to 25.x</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/88a3b9033014bfd4185d934bd199191667a67d2a"><code>88a3b90</code></a>
Change pre-22 poison pill to only log once per affected message type.
(<a
href="https://redirect.github.com/protocolbuffers/protobuf/issues/21754">#21754</a>)</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/320eafa0b7ab3c649f75bcbe851e0d3acf868cf3"><code>320eafa</code></a>
Weaken vulnerable gencode poison pills to warning by default.</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/f584fe36d4aa4af5dcc71e592c855b59e0ecee2c"><code>f584fe3</code></a>
Merge branch 'protocolbuffers:25.x' into 25.x</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/c7100368a25a849691dec7695078a113f6a4ef9f"><code>c710036</code></a>
Update test_upb.yml to use ubuntu-22</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/97217584375d1a29af91aeb607cc67327a3e05da"><code>9721758</code></a>
Fix missing trailing newline.</li>
<li><a
href="https://github.com/protocolbuffers/protobuf/commit/cca7b289bcda8baab9f59101d5c737790c5cc610"><code>cca7b28</code></a>
Update test_upb.yml to use ubuntu-22</li>
<li>Additional commits viewable in <a
href="https://github.com/protocolbuffers/protobuf/compare/v3.20.3...v4.25.8">compare
view</a></li>
</ul>
</details>
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ci/fireci/pyproject.toml

@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 name = "fireci"
 version = "0.1"
 dependencies = [
-  "protobuf==3.20.3",
+  "protobuf==4.25.8",
   "click==8.1.7",
   "google-cloud-storage==2.18.2",
   "mypy==1.6.0",