chore(deps): update dependency protobufjs to v7.3.0 (#1596)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [protobufjs](https://protobufjs.github.io/protobuf.js/) ([source](https://togithub.com/protobufjs/protobuf.js)) | [`7.2.6` -> `7.3.0`](https://renovatebot.com/diffs/npm/protobufjs/7.2.6/7.3.0) | [![age](https://developer.mend.io/api/mc/badges/age/npm/protobufjs/7.3.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/protobufjs/7.3.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/protobufjs/7.2.6/7.3.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/protobufjs/7.2.6/7.3.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>protobufjs/protobuf.js (protobufjs)</summary>

### [`v7.3.0`](https://togithub.com/protobufjs/protobuf.js/blob/HEAD/CHANGELOG.md#730-2024-05-10)

[Compare Source](https://togithub.com/protobufjs/protobuf.js/compare/protobufjs-v7.2.6...protobufjs-v7.3.0)

##### Features

-   add handling for extension range options ([#&#8203;1990](https://togithub.com/protobufjs/protobuf.js/issues/1990)) ([2d58011](https://togithub.com/protobufjs/protobuf.js/commit/2d58011cc0bc495c68ed70f5aad297deb1722378))

</details>

---

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gax/package.json

@@ -21,7 +21,7 @@
     "proto3-json-serializer": "^2.0.0",
     "retry-request": "^7.0.0",
     "uuid": "^9.0.1",
-    "protobufjs": "7.2.6"
+    "protobufjs": "7.3.0"
   },
   "devDependencies": {
     "@types/uuid": "^9.0.7",

tools/package.json

@@ -55,7 +55,7 @@
     "gts": "^5.0.0",
     "mocha": "^9.0.0",
     "ncp": "^2.0.0",
-    "protobufjs": "7.2.6",
+    "protobufjs": "7.3.0",
     "typescript": "^5.1.6"
   },
   "engines": {