Update dependency com_google_protobuf to v29.5 (#512)

> [!NOTE]
> Mend has cancelled [the proposed
renaming](https://redirect.github.com/renovatebot/renovate/discussions/37842)
of the Renovate GitHub app being renamed to `mend[bot]`.
> 
> This notice will be removed on 2025-10-07.

<hr>

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[com_google_protobuf](https://redirect.github.com/protocolbuffers/protobuf)
| http_archive | minor | `v29.3` -> `v29.5` |

---

### Release Notes

<details>
<summary>protocolbuffers/protobuf (com_google_protobuf)</summary>

###
[`v29.5`](https://redirect.github.com/protocolbuffers/protobuf/releases/tag/v29.5):
Protocol Buffers v29.5

[Compare
Source](https://redirect.github.com/protocolbuffers/protobuf/compare/v29.4...v29.5)

### Announcements

- [Protobuf News](https://protobuf.dev/news/) may include additional
announcements or pre-announcements for upcoming changes.

### C++

- Remove fast-path check for non-clang compilers in MessageCreator.
([#&#8203;21612](https://redirect.github.com/protocolbuffers/protobuf/issues/21612))
([`69cca9b`](https://redirect.github.com/protocolbuffers/protobuf/commit/69cca9b7f591ab0edcbd348a5f12ad7103e98f84))

### Java

- Add volatile to featuresResolved
([#&#8203;20767](https://redirect.github.com/protocolbuffers/protobuf/issues/20767))
([`128f0aa`](https://redirect.github.com/protocolbuffers/protobuf/commit/128f0aafd9d32dc537fffb6b6fd9aa7f680ee55c))

### Python

- Add recursion depth limits to pure python
([`05ba1a8`](https://redirect.github.com/protocolbuffers/protobuf/commit/05ba1a8104c5cc39a7b00b749883bbd2de8bca79))
- Internal pure python fixes
([`1ef3f01`](https://redirect.github.com/protocolbuffers/protobuf/commit/1ef3f01c4647df8e63d989489bf1ec1acbcbf8aa))
- Fix: contains check segfaults on empty map
([#&#8203;20446](https://redirect.github.com/protocolbuffers/protobuf/issues/20446))
([#&#8203;20904](https://redirect.github.com/protocolbuffers/protobuf/issues/20904))
([`21fdb7a`](https://redirect.github.com/protocolbuffers/protobuf/commit/21fdb7acdb11fbca234570fa30d2e5687eaf12f6))

### Other

- Re-enable aarch64 tests.
([#&#8203;20853](https://redirect.github.com/protocolbuffers/protobuf/issues/20853))
([`03c50e3`](https://redirect.github.com/protocolbuffers/protobuf/commit/03c50e38747da472e47ad1ceae5dfb02fa90ff66))

###
[`v29.4`](https://redirect.github.com/protocolbuffers/protobuf/releases/tag/v29.4):
Protocol Buffers v29.4

[Compare
Source](https://redirect.github.com/protocolbuffers/protobuf/compare/v29.3...v29.4)

### Announcements

- [Protobuf News](https://protobuf.dev/news/) may include additional
announcements or pre-announcements for upcoming changes.

### Java

- Fix Java concurrency issue in feature resolution for old <=3.25.x
gencode using lazy feature resolution.
([#&#8203;20750](https://redirect.github.com/protocolbuffers/protobuf/issues/20750))
([`ce59907`](https://redirect.github.com/protocolbuffers/protobuf/commit/ce5990778f1196b0eb57088be54957cbd55d0c3e))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/bazel-contrib/toolchains_llvm).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MC42Mi4xIiwidXBkYXRlZEluVmVyIjoiNDEuMTMxLjkiLCJ0YXJnZXRCcmFuY2giOiJtYXN0ZXIiLCJsYWJlbHMiOltdfQ==-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

tests/WORKSPACE

@@ -300,9 +300,9 @@ http_archive(
 
 http_archive(
     name = "com_google_protobuf",
-    sha256 = "e9b9ac1910b1041065839850603caf36e29d3d3d230ddf52bd13778dd31b9046",
-    strip_prefix = "protobuf-29.3",
-    urls = ["https://github.com/protocolbuffers/protobuf/releases/download/v29.3/protobuf-29.3.zip"],
+    sha256 = "b50b953a8f183f1fa58eb7d96fdedd5f982831b13e4477fb6d0b2ae9c9d1bfc1",
+    strip_prefix = "protobuf-29.5",
+    urls = ["https://github.com/protocolbuffers/protobuf/releases/download/v29.5/protobuf-29.5.zip"],
 )
 
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")